./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/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 cfa1fee5fdadabd96a5731bb0a647950318689cce856270fe55e6bf96a429cbb --- 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 16:02:16,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:02:16,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:02:16,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:02:16,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:02:16,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:02:16,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:02:16,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:02:16,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:02:16,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:02:16,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:02:16,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:02:16,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:02:16,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:02:16,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:02:16,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:02:16,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:02:16,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:02:16,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:02:16,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:02:16,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:02:16,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:02:16,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:02:16,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:02:16,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:02:16,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:02:16,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:02:16,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:02:16,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:02:16,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:02:16,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:02:16,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:02:16,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:02:16,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:02:16,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:02:16,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:02:16,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:02:16,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:02:16,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:02:16,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:02:16,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:02:16,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:02:16,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:02:16,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:02:16,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:02:16,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:02:16,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:02:16,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:02:16,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:02:16,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:02:16,081 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:02:16,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:02:16,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:02:16,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:02:16,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:02:16,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:02:16,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:02:16,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:02:16,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:02:16,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:02:16,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:02:16,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:02:16,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:02:16,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:02:16,086 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:02:16,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:02:16,086 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:02:16,086 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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa1fee5fdadabd96a5731bb0a647950318689cce856270fe55e6bf96a429cbb [2022-12-13 16:02:16,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:02:16,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:02:16,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:02:16,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:02:16,309 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:02:16,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-12-13 16:02:18,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:02:19,129 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:02:19,130 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-12-13 16:02:19,148 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/data/5b44c85a6/459701f6805c46c582aa6f2f5753407a/FLAG9eeb1a6b6 [2022-12-13 16:02:19,161 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/data/5b44c85a6/459701f6805c46c582aa6f2f5753407a [2022-12-13 16:02:19,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:02:19,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:02:19,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:02:19,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:02:19,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:02:19,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:02:19" (1/1) ... [2022-12-13 16:02:19,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e006320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:19, skipping insertion in model container [2022-12-13 16:02:19,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:02:19" (1/1) ... [2022-12-13 16:02:19,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:02:19,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:02:19,547 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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20454,20467] [2022-12-13 16:02:19,574 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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23271,23284] [2022-12-13 16:02:20,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:02:20,179 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:02:20,204 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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20454,20467] [2022-12-13 16:02:20,207 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_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23271,23284] [2022-12-13 16:02:20,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:02:20,583 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:02:20,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20 WrapperNode [2022-12-13 16:02:20,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:02:20,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:02:20,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:02:20,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:02:20,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,819 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5180 [2022-12-13 16:02:20,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:02:20,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:02:20,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:02:20,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:02:20,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:20,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:21,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:21,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:21,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:21,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:02:21,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:02:21,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:02:21,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:02:21,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (1/1) ... [2022-12-13 16:02:21,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:02:21,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:02:21,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:02:21,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:02:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:02:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:02:21,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:02:21,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:02:21,315 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:02:21,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:02:24,804 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:02:24,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:02:24,817 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:02:24,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:02:24 BoogieIcfgContainer [2022-12-13 16:02:24,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:02:24,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:02:24,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:02:24,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:02:24,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:02:19" (1/3) ... [2022-12-13 16:02:24,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b18f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:02:24, skipping insertion in model container [2022-12-13 16:02:24,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:02:20" (2/3) ... [2022-12-13 16:02:24,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b18f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:02:24, skipping insertion in model container [2022-12-13 16:02:24,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:02:24" (3/3) ... [2022-12-13 16:02:24,827 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-12-13 16:02:24,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:02:24,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 16:02:24,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:02:24,901 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;@7ad3d514, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:02:24,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 16:02:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 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 16:02:24,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 16:02:24,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:24,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:24,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:24,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -439239275, now seen corresponding path program 1 times [2022-12-13 16:02:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771476374] [2022-12-13 16:02:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:25,131 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 16:02:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:25,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771476374] [2022-12-13 16:02:25,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771476374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:25,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:25,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:02:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353849250] [2022-12-13 16:02:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:25,171 INFO L87 Difference]: Start difference. First operand has 932 states, 929 states have (on average 1.9031216361679224) internal successors, (1768), 931 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:02:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:28,229 INFO L93 Difference]: Finished difference Result 2561 states and 4928 transitions. [2022-12-13 16:02:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:28,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 16:02:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:28,245 INFO L225 Difference]: With dead ends: 2561 [2022-12-13 16:02:28,245 INFO L226 Difference]: Without dead ends: 1617 [2022-12-13 16:02:28,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:28,251 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1007 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:28,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 679 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 16:02:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2022-12-13 16:02:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2022-12-13 16:02:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1615 states have (on average 1.648297213622291) internal successors, (2662), 1616 states have internal predecessors, (2662), 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 16:02:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2662 transitions. [2022-12-13 16:02:28,315 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2662 transitions. Word has length 24 [2022-12-13 16:02:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:28,315 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2662 transitions. [2022-12-13 16:02:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:02:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2662 transitions. [2022-12-13 16:02:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 16:02:28,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:28,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:02:28,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash 189926458, now seen corresponding path program 1 times [2022-12-13 16:02:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:28,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432413226] [2022-12-13 16:02:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:28,445 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 16:02:28,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:28,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432413226] [2022-12-13 16:02:28,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432413226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:28,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:28,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:02:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147950280] [2022-12-13 16:02:28,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:02:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:02:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:02:28,448 INFO L87 Difference]: Start difference. First operand 1617 states and 2662 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 16:02:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:28,538 INFO L93 Difference]: Finished difference Result 1677 states and 2756 transitions. [2022-12-13 16:02:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:02:28,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 16:02:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:28,542 INFO L225 Difference]: With dead ends: 1677 [2022-12-13 16:02:28,542 INFO L226 Difference]: Without dead ends: 1617 [2022-12-13 16:02:28,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:02:28,544 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 3 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:28,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6479 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2022-12-13 16:02:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2022-12-13 16:02:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1615 states have (on average 1.6173374613003095) internal successors, (2612), 1616 states have internal predecessors, (2612), 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 16:02:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2612 transitions. [2022-12-13 16:02:28,567 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2612 transitions. Word has length 28 [2022-12-13 16:02:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:28,568 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2612 transitions. [2022-12-13 16:02:28,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 16:02:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2612 transitions. [2022-12-13 16:02:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:02:28,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:28,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:28,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:02:28,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1109970983, now seen corresponding path program 1 times [2022-12-13 16:02:28,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:28,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614411320] [2022-12-13 16:02:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:28,774 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 16:02:28,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:28,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614411320] [2022-12-13 16:02:28,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614411320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:28,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:28,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:02:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771202296] [2022-12-13 16:02:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:28,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:02:28,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:02:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:02:28,777 INFO L87 Difference]: Start difference. First operand 1617 states and 2612 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 16:02:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:29,175 INFO L93 Difference]: Finished difference Result 2401 states and 3872 transitions. [2022-12-13 16:02:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:02:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 77 [2022-12-13 16:02:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:29,185 INFO L225 Difference]: With dead ends: 2401 [2022-12-13 16:02:29,185 INFO L226 Difference]: Without dead ends: 2345 [2022-12-13 16:02:29,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 16:02:29,187 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 11614 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11614 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:29,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11614 Valid, 4325 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:02:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2022-12-13 16:02:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1671. [2022-12-13 16:02:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.6171360095865788) internal successors, (2699), 1670 states have internal predecessors, (2699), 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 16:02:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2699 transitions. [2022-12-13 16:02:29,238 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2699 transitions. Word has length 77 [2022-12-13 16:02:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:29,238 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2699 transitions. [2022-12-13 16:02:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 16:02:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2699 transitions. [2022-12-13 16:02:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 16:02:29,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:29,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:02:29,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1349050793, now seen corresponding path program 1 times [2022-12-13 16:02:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:29,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346033316] [2022-12-13 16:02:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:29,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:29,382 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 16:02:29,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:29,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346033316] [2022-12-13 16:02:29,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346033316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:29,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:29,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859125945] [2022-12-13 16:02:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:29,385 INFO L87 Difference]: Start difference. First operand 1671 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 16:02:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:29,451 INFO L93 Difference]: Finished difference Result 1880 states and 3034 transitions. [2022-12-13 16:02:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:29,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-12-13 16:02:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:29,456 INFO L225 Difference]: With dead ends: 1880 [2022-12-13 16:02:29,457 INFO L226 Difference]: Without dead ends: 1770 [2022-12-13 16:02:29,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:29,458 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1500 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:29,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1664 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-12-13 16:02:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1766. [2022-12-13 16:02:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.6150793650793651) internal successors, (2849), 1765 states have internal predecessors, (2849), 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 16:02:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2849 transitions. [2022-12-13 16:02:29,505 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2849 transitions. Word has length 79 [2022-12-13 16:02:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:29,506 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2849 transitions. [2022-12-13 16:02:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 16:02:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2849 transitions. [2022-12-13 16:02:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 16:02:29,507 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:29,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:29,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:02:29,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1415544305, now seen corresponding path program 1 times [2022-12-13 16:02:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:29,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628423422] [2022-12-13 16:02:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:29,823 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 16:02:29,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628423422] [2022-12-13 16:02:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628423422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:29,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:29,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:02:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601424336] [2022-12-13 16:02:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:02:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:02:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:02:29,825 INFO L87 Difference]: Start difference. First operand 1766 states and 2849 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 16:02:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:30,106 INFO L93 Difference]: Finished difference Result 1973 states and 3177 transitions. [2022-12-13 16:02:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:02:30,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 79 [2022-12-13 16:02:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:30,113 INFO L225 Difference]: With dead ends: 1973 [2022-12-13 16:02:30,113 INFO L226 Difference]: Without dead ends: 1768 [2022-12-13 16:02:30,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:02:30,115 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 9072 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9072 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:30,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9072 Valid, 2099 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:02:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-12-13 16:02:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1766. [2022-12-13 16:02:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.6139455782312926) internal successors, (2847), 1765 states have internal predecessors, (2847), 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 16:02:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2847 transitions. [2022-12-13 16:02:30,150 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2847 transitions. Word has length 79 [2022-12-13 16:02:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:30,150 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2847 transitions. [2022-12-13 16:02:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 16:02:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2847 transitions. [2022-12-13 16:02:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 16:02:30,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:30,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:02:30,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash 517477589, now seen corresponding path program 1 times [2022-12-13 16:02:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:30,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131639917] [2022-12-13 16:02:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:30,356 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 16:02:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131639917] [2022-12-13 16:02:30,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131639917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:30,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:30,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:02:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294465760] [2022-12-13 16:02:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:02:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:02:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:02:30,359 INFO L87 Difference]: Start difference. First operand 1766 states and 2847 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 16:02:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:30,520 INFO L93 Difference]: Finished difference Result 1967 states and 3161 transitions. [2022-12-13 16:02:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:02:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 80 [2022-12-13 16:02:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:30,525 INFO L225 Difference]: With dead ends: 1967 [2022-12-13 16:02:30,525 INFO L226 Difference]: Without dead ends: 1965 [2022-12-13 16:02:30,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:02:30,527 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 532 mSDsluCounter, 9218 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 10881 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:30,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 10881 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-12-13 16:02:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1772. [2022-12-13 16:02:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1770 states have (on average 1.6112994350282486) internal successors, (2852), 1771 states have internal predecessors, (2852), 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 16:02:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2852 transitions. [2022-12-13 16:02:30,568 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2852 transitions. Word has length 80 [2022-12-13 16:02:30,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:30,569 INFO L495 AbstractCegarLoop]: Abstraction has 1772 states and 2852 transitions. [2022-12-13 16:02:30,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 16:02:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2852 transitions. [2022-12-13 16:02:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:30,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:30,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:30,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:02:30,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:30,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash -927531695, now seen corresponding path program 1 times [2022-12-13 16:02:30,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:30,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954458166] [2022-12-13 16:02:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:30,612 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 16:02:30,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:30,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954458166] [2022-12-13 16:02:30,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954458166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:30,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:30,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023329338] [2022-12-13 16:02:30,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:30,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:30,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:30,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:30,614 INFO L87 Difference]: Start difference. First operand 1772 states and 2852 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:30,675 INFO L93 Difference]: Finished difference Result 2178 states and 3484 transitions. [2022-12-13 16:02:30,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:30,680 INFO L225 Difference]: With dead ends: 2178 [2022-12-13 16:02:30,680 INFO L226 Difference]: Without dead ends: 1967 [2022-12-13 16:02:30,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:30,681 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1517 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:30,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-12-13 16:02:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1965. [2022-12-13 16:02:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1963 states have (on average 1.6041772796739684) internal successors, (3149), 1964 states have internal predecessors, (3149), 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 16:02:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3149 transitions. [2022-12-13 16:02:30,736 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3149 transitions. Word has length 81 [2022-12-13 16:02:30,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:30,736 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 3149 transitions. [2022-12-13 16:02:30,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3149 transitions. [2022-12-13 16:02:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:30,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:30,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:02:30,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash -764617135, now seen corresponding path program 1 times [2022-12-13 16:02:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:30,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107204308] [2022-12-13 16:02:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:30,778 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 16:02:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:30,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107204308] [2022-12-13 16:02:30,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107204308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:30,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:30,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678063825] [2022-12-13 16:02:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:30,780 INFO L87 Difference]: Start difference. First operand 1965 states and 3149 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:30,880 INFO L93 Difference]: Finished difference Result 2741 states and 4347 transitions. [2022-12-13 16:02:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:30,885 INFO L225 Difference]: With dead ends: 2741 [2022-12-13 16:02:30,885 INFO L226 Difference]: Without dead ends: 2337 [2022-12-13 16:02:30,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:30,886 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1515 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:30,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-12-13 16:02:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2335. [2022-12-13 16:02:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2333 states have (on average 1.5906558079725674) internal successors, (3711), 2334 states have internal predecessors, (3711), 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 16:02:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3711 transitions. [2022-12-13 16:02:30,975 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3711 transitions. Word has length 81 [2022-12-13 16:02:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:30,975 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3711 transitions. [2022-12-13 16:02:30,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3711 transitions. [2022-12-13 16:02:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:30,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:30,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:30,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:02:30,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash 737501265, now seen corresponding path program 1 times [2022-12-13 16:02:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:30,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773405089] [2022-12-13 16:02:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:31,022 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 16:02:31,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:31,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773405089] [2022-12-13 16:02:31,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773405089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:31,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:31,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:31,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650763795] [2022-12-13 16:02:31,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:31,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:31,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:31,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:31,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:31,024 INFO L87 Difference]: Start difference. First operand 2335 states and 3711 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:31,183 INFO L93 Difference]: Finished difference Result 3819 states and 5977 transitions. [2022-12-13 16:02:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:31,193 INFO L225 Difference]: With dead ends: 3819 [2022-12-13 16:02:31,194 INFO L226 Difference]: Without dead ends: 3045 [2022-12-13 16:02:31,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:31,195 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1511 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:31,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1745 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-12-13 16:02:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3043. [2022-12-13 16:02:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3041 states have (on average 1.568891811903979) internal successors, (4771), 3042 states have internal predecessors, (4771), 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 16:02:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4771 transitions. [2022-12-13 16:02:31,348 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4771 transitions. Word has length 81 [2022-12-13 16:02:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:31,348 INFO L495 AbstractCegarLoop]: Abstraction has 3043 states and 4771 transitions. [2022-12-13 16:02:31,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4771 transitions. [2022-12-13 16:02:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:31,349 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:31,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:31,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:02:31,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:31,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1477967535, now seen corresponding path program 1 times [2022-12-13 16:02:31,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:31,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307270593] [2022-12-13 16:02:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:31,394 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 16:02:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:31,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307270593] [2022-12-13 16:02:31,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307270593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:31,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:31,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:31,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126621778] [2022-12-13 16:02:31,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:31,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:31,396 INFO L87 Difference]: Start difference. First operand 3043 states and 4771 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:31,729 INFO L93 Difference]: Finished difference Result 5879 states and 9045 transitions. [2022-12-13 16:02:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:31,744 INFO L225 Difference]: With dead ends: 5879 [2022-12-13 16:02:31,744 INFO L226 Difference]: Without dead ends: 4397 [2022-12-13 16:02:31,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:31,747 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 1509 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:31,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2022-12-13 16:02:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4395. [2022-12-13 16:02:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4393 states have (on average 1.539494650580469) internal successors, (6763), 4394 states have internal predecessors, (6763), 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 16:02:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 6763 transitions. [2022-12-13 16:02:32,101 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 6763 transitions. Word has length 81 [2022-12-13 16:02:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:32,102 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 6763 transitions. [2022-12-13 16:02:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 6763 transitions. [2022-12-13 16:02:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:32,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:32,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:02:32,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:32,103 INFO L85 PathProgramCache]: Analyzing trace with hash 302965329, now seen corresponding path program 1 times [2022-12-13 16:02:32,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:32,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975342394] [2022-12-13 16:02:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:32,144 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 16:02:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:32,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975342394] [2022-12-13 16:02:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975342394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:32,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:32,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901914635] [2022-12-13 16:02:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:32,146 INFO L87 Difference]: Start difference. First operand 4395 states and 6763 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:32,624 INFO L93 Difference]: Finished difference Result 9807 states and 14797 transitions. [2022-12-13 16:02:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:32,643 INFO L225 Difference]: With dead ends: 9807 [2022-12-13 16:02:32,643 INFO L226 Difference]: Without dead ends: 6973 [2022-12-13 16:02:32,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:32,648 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 1507 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:32,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-12-13 16:02:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6971. [2022-12-13 16:02:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6971 states, 6969 states have (on average 1.5053809728798966) internal successors, (10491), 6970 states have internal predecessors, (10491), 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 16:02:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 10491 transitions. [2022-12-13 16:02:33,258 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 10491 transitions. Word has length 81 [2022-12-13 16:02:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:33,259 INFO L495 AbstractCegarLoop]: Abstraction has 6971 states and 10491 transitions. [2022-12-13 16:02:33,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 10491 transitions. [2022-12-13 16:02:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 16:02:33,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:33,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:02:33,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash -500760751, now seen corresponding path program 1 times [2022-12-13 16:02:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448505101] [2022-12-13 16:02:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:33,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:33,317 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 16:02:33,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448505101] [2022-12-13 16:02:33,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448505101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:33,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:33,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271242316] [2022-12-13 16:02:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:33,319 INFO L87 Difference]: Start difference. First operand 6971 states and 10491 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:34,307 INFO L93 Difference]: Finished difference Result 17279 states and 25533 transitions. [2022-12-13 16:02:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 81 [2022-12-13 16:02:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:34,323 INFO L225 Difference]: With dead ends: 17279 [2022-12-13 16:02:34,323 INFO L226 Difference]: Without dead ends: 11869 [2022-12-13 16:02:34,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:34,327 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1513 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:34,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1751 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2022-12-13 16:02:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 11867. [2022-12-13 16:02:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11867 states, 11865 states have (on average 1.4694479561736198) internal successors, (17435), 11866 states have internal predecessors, (17435), 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 16:02:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11867 states to 11867 states and 17435 transitions. [2022-12-13 16:02:35,461 INFO L78 Accepts]: Start accepts. Automaton has 11867 states and 17435 transitions. Word has length 81 [2022-12-13 16:02:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:35,462 INFO L495 AbstractCegarLoop]: Abstraction has 11867 states and 17435 transitions. [2022-12-13 16:02:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 16:02:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11867 states and 17435 transitions. [2022-12-13 16:02:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 16:02:35,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:35,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:02:35,463 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1125158260, now seen corresponding path program 1 times [2022-12-13 16:02:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:35,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355249997] [2022-12-13 16:02:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:35,502 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 16:02:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:35,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355249997] [2022-12-13 16:02:35,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355249997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:35,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:35,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:02:35,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751263255] [2022-12-13 16:02:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:35,504 INFO L87 Difference]: Start difference. First operand 11867 states and 17435 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 16:02:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:37,070 INFO L93 Difference]: Finished difference Result 22626 states and 33185 transitions. [2022-12-13 16:02:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-12-13 16:02:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:37,089 INFO L225 Difference]: With dead ends: 22626 [2022-12-13 16:02:37,090 INFO L226 Difference]: Without dead ends: 16863 [2022-12-13 16:02:37,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:37,095 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1516 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:37,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:02:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16863 states. [2022-12-13 16:02:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16863 to 16861. [2022-12-13 16:02:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16861 states, 16859 states have (on average 1.455661664392906) internal successors, (24541), 16860 states have internal predecessors, (24541), 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 16:02:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16861 states to 16861 states and 24541 transitions. [2022-12-13 16:02:38,655 INFO L78 Accepts]: Start accepts. Automaton has 16861 states and 24541 transitions. Word has length 83 [2022-12-13 16:02:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 16861 states and 24541 transitions. [2022-12-13 16:02:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 16:02:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16861 states and 24541 transitions. [2022-12-13 16:02:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 16:02:38,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:38,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:02:38,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2028768304, now seen corresponding path program 1 times [2022-12-13 16:02:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:38,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108506883] [2022-12-13 16:02:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:02:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:38,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108506883] [2022-12-13 16:02:38,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108506883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:38,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:38,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:02:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193505590] [2022-12-13 16:02:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:38,709 INFO L87 Difference]: Start difference. First operand 16861 states and 24541 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 16:02:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:43,316 INFO L93 Difference]: Finished difference Result 19867 states and 29468 transitions. [2022-12-13 16:02:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-13 16:02:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:43,339 INFO L225 Difference]: With dead ends: 19867 [2022-12-13 16:02:43,339 INFO L226 Difference]: Without dead ends: 18363 [2022-12-13 16:02:43,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:43,343 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 871 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:43,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 621 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 16:02:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18363 states. [2022-12-13 16:02:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18363 to 18363. [2022-12-13 16:02:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18363 states, 18361 states have (on average 1.4357061162246065) internal successors, (26361), 18362 states have internal predecessors, (26361), 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 16:02:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18363 states to 18363 states and 26361 transitions. [2022-12-13 16:02:44,990 INFO L78 Accepts]: Start accepts. Automaton has 18363 states and 26361 transitions. Word has length 95 [2022-12-13 16:02:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:44,990 INFO L495 AbstractCegarLoop]: Abstraction has 18363 states and 26361 transitions. [2022-12-13 16:02:44,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 16:02:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 18363 states and 26361 transitions. [2022-12-13 16:02:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 16:02:44,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:44,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:44,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:02:44,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:44,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2066302022, now seen corresponding path program 1 times [2022-12-13 16:02:44,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:44,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811671787] [2022-12-13 16:02:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:02:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:45,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811671787] [2022-12-13 16:02:45,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811671787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:45,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:45,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:02:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109186623] [2022-12-13 16:02:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:45,059 INFO L87 Difference]: Start difference. First operand 18363 states and 26361 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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 16:02:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:49,586 INFO L93 Difference]: Finished difference Result 24375 states and 34929 transitions. [2022-12-13 16:02:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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 99 [2022-12-13 16:02:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:49,606 INFO L225 Difference]: With dead ends: 24375 [2022-12-13 16:02:49,606 INFO L226 Difference]: Without dead ends: 21369 [2022-12-13 16:02:49,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:49,614 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1061 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:49,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 729 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 16:02:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21369 states. [2022-12-13 16:02:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21369 to 21367. [2022-12-13 16:02:51,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21367 states, 21365 states have (on average 1.4070676339808097) internal successors, (30062), 21366 states have internal predecessors, (30062), 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 16:02:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21367 states to 21367 states and 30062 transitions. [2022-12-13 16:02:51,307 INFO L78 Accepts]: Start accepts. Automaton has 21367 states and 30062 transitions. Word has length 99 [2022-12-13 16:02:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:51,308 INFO L495 AbstractCegarLoop]: Abstraction has 21367 states and 30062 transitions. [2022-12-13 16:02:51,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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 16:02:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 21367 states and 30062 transitions. [2022-12-13 16:02:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:02:51,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:51,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:02:51,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:02:51,311 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -293163275, now seen corresponding path program 1 times [2022-12-13 16:02:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:51,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522161516] [2022-12-13 16:02:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:02:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:51,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522161516] [2022-12-13 16:02:51,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522161516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:51,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:51,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:02:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523648733] [2022-12-13 16:02:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:02:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:02:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:02:51,448 INFO L87 Difference]: Start difference. First operand 21367 states and 30062 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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 16:03:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:04,339 INFO L93 Difference]: Finished difference Result 131591 states and 188534 transitions. [2022-12-13 16:03:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:03:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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 104 [2022-12-13 16:03:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:03:04,480 INFO L225 Difference]: With dead ends: 131591 [2022-12-13 16:03:04,480 INFO L226 Difference]: Without dead ends: 116293 [2022-12-13 16:03:04,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:03:04,502 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 9907 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9907 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:03:04,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9907 Valid, 4412 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:03:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116293 states. [2022-12-13 16:03:09,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116293 to 36663. [2022-12-13 16:03:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36663 states, 36661 states have (on average 1.4152914541338206) internal successors, (51886), 36662 states have internal predecessors, (51886), 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 16:03:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36663 states to 36663 states and 51886 transitions. [2022-12-13 16:03:09,519 INFO L78 Accepts]: Start accepts. Automaton has 36663 states and 51886 transitions. Word has length 104 [2022-12-13 16:03:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:03:09,519 INFO L495 AbstractCegarLoop]: Abstraction has 36663 states and 51886 transitions. [2022-12-13 16:03:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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 16:03:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 36663 states and 51886 transitions. [2022-12-13 16:03:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:03:09,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:03:09,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:09,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:03:09,523 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:03:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash -130248715, now seen corresponding path program 1 times [2022-12-13 16:03:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:09,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287715782] [2022-12-13 16:03:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:03:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287715782] [2022-12-13 16:03:09,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287715782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:09,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:09,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:03:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652595200] [2022-12-13 16:03:09,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:09,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:03:09,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:09,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:03:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:03:09,657 INFO L87 Difference]: Start difference. First operand 36663 states and 51886 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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 16:03:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:27,820 INFO L93 Difference]: Finished difference Result 146887 states and 210358 transitions. [2022-12-13 16:03:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:03:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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 104 [2022-12-13 16:03:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:03:27,981 INFO L225 Difference]: With dead ends: 146887 [2022-12-13 16:03:27,981 INFO L226 Difference]: Without dead ends: 131589 [2022-12-13 16:03:28,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:03:28,006 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 9953 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9953 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:03:28,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9953 Valid, 4275 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:03:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131589 states. [2022-12-13 16:03:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131589 to 59639. [2022-12-13 16:03:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59639 states, 59637 states have (on average 1.416268423964988) internal successors, (84462), 59638 states have internal predecessors, (84462), 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 16:03:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59639 states to 59639 states and 84462 transitions. [2022-12-13 16:03:36,904 INFO L78 Accepts]: Start accepts. Automaton has 59639 states and 84462 transitions. Word has length 104 [2022-12-13 16:03:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:03:36,904 INFO L495 AbstractCegarLoop]: Abstraction has 59639 states and 84462 transitions. [2022-12-13 16:03:36,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 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 16:03:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 59639 states and 84462 transitions. [2022-12-13 16:03:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:03:36,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:03:36,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:03:36,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:03:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1371869685, now seen corresponding path program 1 times [2022-12-13 16:03:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:36,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452527433] [2022-12-13 16:03:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:03:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452527433] [2022-12-13 16:03:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452527433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:37,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:37,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:03:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85352965] [2022-12-13 16:03:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:03:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:03:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:03:37,042 INFO L87 Difference]: Start difference. First operand 59639 states and 84462 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 16:03:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:59,857 INFO L93 Difference]: Finished difference Result 162183 states and 232182 transitions. [2022-12-13 16:03:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:03:59,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 104 [2022-12-13 16:03:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:00,036 INFO L225 Difference]: With dead ends: 162183 [2022-12-13 16:04:00,036 INFO L226 Difference]: Without dead ends: 146885 [2022-12-13 16:04:00,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:04:00,064 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 10026 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10026 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:00,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10026 Valid, 4279 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:04:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146885 states. [2022-12-13 16:04:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146885 to 74935. [2022-12-13 16:04:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74935 states, 74933 states have (on average 1.4184137829794616) internal successors, (106286), 74934 states have internal predecessors, (106286), 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 16:04:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74935 states to 74935 states and 106286 transitions. [2022-12-13 16:04:12,109 INFO L78 Accepts]: Start accepts. Automaton has 74935 states and 106286 transitions. Word has length 104 [2022-12-13 16:04:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 74935 states and 106286 transitions. [2022-12-13 16:04:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 16:04:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 74935 states and 106286 transitions. [2022-12-13 16:04:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:04:12,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:12,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:04:12,114 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -843599115, now seen corresponding path program 1 times [2022-12-13 16:04:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:12,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828315900] [2022-12-13 16:04:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:04:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:12,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828315900] [2022-12-13 16:04:12,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828315900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:12,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:12,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:04:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500897861] [2022-12-13 16:04:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:12,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:04:12,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:04:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:04:12,247 INFO L87 Difference]: Start difference. First operand 74935 states and 106286 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 16:04:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:39,365 INFO L93 Difference]: Finished difference Result 177479 states and 254006 transitions. [2022-12-13 16:04:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:04:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 104 [2022-12-13 16:04:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:39,565 INFO L225 Difference]: With dead ends: 177479 [2022-12-13 16:04:39,565 INFO L226 Difference]: Without dead ends: 162181 [2022-12-13 16:04:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:04:39,593 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 10093 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10093 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:39,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10093 Valid, 4243 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:04:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162181 states. [2022-12-13 16:04:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162181 to 90231. [2022-12-13 16:04:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90231 states, 90229 states have (on average 1.4198317614070863) internal successors, (128110), 90230 states have internal predecessors, (128110), 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 16:04:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90231 states to 90231 states and 128110 transitions. [2022-12-13 16:04:54,891 INFO L78 Accepts]: Start accepts. Automaton has 90231 states and 128110 transitions. Word has length 104 [2022-12-13 16:04:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:54,891 INFO L495 AbstractCegarLoop]: Abstraction has 90231 states and 128110 transitions. [2022-12-13 16:04:54,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 16:04:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 90231 states and 128110 transitions. [2022-12-13 16:04:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:04:54,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:54,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:54,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:04:54,895 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash 937333749, now seen corresponding path program 1 times [2022-12-13 16:04:54,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:54,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400933139] [2022-12-13 16:04:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:04:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400933139] [2022-12-13 16:04:55,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400933139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:55,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:55,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:04:55,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698527175] [2022-12-13 16:04:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:55,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:04:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:04:55,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:04:55,025 INFO L87 Difference]: Start difference. First operand 90231 states and 128110 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 16:05:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:26,406 INFO L93 Difference]: Finished difference Result 192775 states and 275830 transitions. [2022-12-13 16:05:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:05:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 104 [2022-12-13 16:05:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:26,623 INFO L225 Difference]: With dead ends: 192775 [2022-12-13 16:05:26,623 INFO L226 Difference]: Without dead ends: 177477 [2022-12-13 16:05:26,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:05:26,654 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 9943 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9943 SdHoareTripleChecker+Valid, 4330 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:26,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9943 Valid, 4330 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:05:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177477 states. [2022-12-13 16:05:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177477 to 105527. [2022-12-13 16:05:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105527 states, 105525 states have (on average 1.4208386638237385) internal successors, (149934), 105526 states have internal predecessors, (149934), 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 16:05:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105527 states to 105527 states and 149934 transitions. [2022-12-13 16:05:45,310 INFO L78 Accepts]: Start accepts. Automaton has 105527 states and 149934 transitions. Word has length 104 [2022-12-13 16:05:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:45,311 INFO L495 AbstractCegarLoop]: Abstraction has 105527 states and 149934 transitions. [2022-12-13 16:05:45,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 16:05:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 105527 states and 149934 transitions. [2022-12-13 16:05:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:05:45,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:45,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:45,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:05:45,315 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 133607669, now seen corresponding path program 1 times [2022-12-13 16:05:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284720821] [2022-12-13 16:05:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:05:45,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:45,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284720821] [2022-12-13 16:05:45,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284720821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:45,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:45,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:05:45,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963733147] [2022-12-13 16:05:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:45,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:05:45,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:05:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:05:45,438 INFO L87 Difference]: Start difference. First operand 105527 states and 149934 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 16:06:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:06:22,236 INFO L93 Difference]: Finished difference Result 208071 states and 297654 transitions. [2022-12-13 16:06:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:06:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 104 [2022-12-13 16:06:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:06:22,477 INFO L225 Difference]: With dead ends: 208071 [2022-12-13 16:06:22,477 INFO L226 Difference]: Without dead ends: 192773 [2022-12-13 16:06:22,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:06:22,513 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 9833 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9833 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:06:22,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9833 Valid, 4570 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:06:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192773 states. [2022-12-13 16:06:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192773 to 120823. [2022-12-13 16:06:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120823 states, 120821 states have (on average 1.4215906175250992) internal successors, (171758), 120822 states have internal predecessors, (171758), 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 16:06:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120823 states to 120823 states and 171758 transitions. [2022-12-13 16:06:45,441 INFO L78 Accepts]: Start accepts. Automaton has 120823 states and 171758 transitions. Word has length 104 [2022-12-13 16:06:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:06:45,441 INFO L495 AbstractCegarLoop]: Abstraction has 120823 states and 171758 transitions. [2022-12-13 16:06:45,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 16:06:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 120823 states and 171758 transitions. [2022-12-13 16:06:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:06:45,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:06:45,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:06:45,447 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:06:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash 388736525, now seen corresponding path program 1 times [2022-12-13 16:06:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:45,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495378326] [2022-12-13 16:06:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:06:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:45,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495378326] [2022-12-13 16:06:45,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495378326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:06:45,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:06:45,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:06:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608717377] [2022-12-13 16:06:45,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:06:45,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:06:45,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:06:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:06:45,506 INFO L87 Difference]: Start difference. First operand 120823 states and 171758 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 16:07:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:07:01,723 INFO L93 Difference]: Finished difference Result 201491 states and 287945 transitions. [2022-12-13 16:07:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-12-13 16:07:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:07:01,821 INFO L225 Difference]: With dead ends: 201491 [2022-12-13 16:07:01,821 INFO L226 Difference]: Without dead ends: 86737 [2022-12-13 16:07:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:01,865 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 66 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:07:01,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3211 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:07:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86737 states. [2022-12-13 16:07:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86737 to 86735. [2022-12-13 16:07:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86735 states, 86733 states have (on average 1.4212583445747293) internal successors, (123270), 86734 states have internal predecessors, (123270), 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 16:07:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86735 states to 86735 states and 123270 transitions. [2022-12-13 16:07:17,861 INFO L78 Accepts]: Start accepts. Automaton has 86735 states and 123270 transitions. Word has length 106 [2022-12-13 16:07:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:17,861 INFO L495 AbstractCegarLoop]: Abstraction has 86735 states and 123270 transitions. [2022-12-13 16:07:17,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 16:07:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 86735 states and 123270 transitions. [2022-12-13 16:07:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:07:17,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:17,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:07:17,864 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1382462672, now seen corresponding path program 1 times [2022-12-13 16:07:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:17,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277490809] [2022-12-13 16:07:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:07:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:17,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277490809] [2022-12-13 16:07:17,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277490809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:17,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:17,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:07:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237267368] [2022-12-13 16:07:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:07:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:07:17,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:07:17,968 INFO L87 Difference]: Start difference. First operand 86735 states and 123270 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 16:07:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:07:50,691 INFO L93 Difference]: Finished difference Result 162015 states and 231694 transitions. [2022-12-13 16:07:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:07:50,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 106 [2022-12-13 16:07:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:07:50,870 INFO L225 Difference]: With dead ends: 162015 [2022-12-13 16:07:50,870 INFO L226 Difference]: Without dead ends: 151261 [2022-12-13 16:07:50,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:07:50,896 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9916 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9916 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:07:50,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9916 Valid, 4650 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:07:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151261 states. [2022-12-13 16:08:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151261 to 97487. [2022-12-13 16:08:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97487 states, 97485 states have (on average 1.4220649330666257) internal successors, (138630), 97486 states have internal predecessors, (138630), 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 16:08:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97487 states to 97487 states and 138630 transitions. [2022-12-13 16:08:11,190 INFO L78 Accepts]: Start accepts. Automaton has 97487 states and 138630 transitions. Word has length 106 [2022-12-13 16:08:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:11,190 INFO L495 AbstractCegarLoop]: Abstraction has 97487 states and 138630 transitions. [2022-12-13 16:08:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 16:08:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 97487 states and 138630 transitions. [2022-12-13 16:08:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:08:11,194 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:11,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:11,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:08:11,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1784794265, now seen corresponding path program 1 times [2022-12-13 16:08:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:11,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257840659] [2022-12-13 16:08:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:11,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257840659] [2022-12-13 16:08:11,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257840659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:11,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:11,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234243468] [2022-12-13 16:08:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:11,254 INFO L87 Difference]: Start difference. First operand 97487 states and 138630 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 16:08:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:21,425 INFO L93 Difference]: Finished difference Result 143187 states and 203912 transitions. [2022-12-13 16:08:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2022-12-13 16:08:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:21,483 INFO L225 Difference]: With dead ends: 143187 [2022-12-13 16:08:21,483 INFO L226 Difference]: Without dead ends: 51793 [2022-12-13 16:08:21,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:21,516 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 61 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:21,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3196 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51793 states. [2022-12-13 16:08:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51793 to 51791. [2022-12-13 16:08:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51791 states, 51789 states have (on average 1.405819768676746) internal successors, (72806), 51790 states have internal predecessors, (72806), 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 16:08:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51791 states to 51791 states and 72806 transitions. [2022-12-13 16:08:31,636 INFO L78 Accepts]: Start accepts. Automaton has 51791 states and 72806 transitions. Word has length 107 [2022-12-13 16:08:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:31,637 INFO L495 AbstractCegarLoop]: Abstraction has 51791 states and 72806 transitions. [2022-12-13 16:08:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 16:08:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 51791 states and 72806 transitions. [2022-12-13 16:08:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 16:08:31,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:31,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:31,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:08:31,639 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 171046265, now seen corresponding path program 1 times [2022-12-13 16:08:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:31,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978232214] [2022-12-13 16:08:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:31,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978232214] [2022-12-13 16:08:31,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978232214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:31,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:31,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693455214] [2022-12-13 16:08:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:31,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:31,699 INFO L87 Difference]: Start difference. First operand 51791 states and 72806 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 16:08:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:36,857 INFO L93 Difference]: Finished difference Result 74643 states and 105176 transitions. [2022-12-13 16:08:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-12-13 16:08:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:36,884 INFO L225 Difference]: With dead ends: 74643 [2022-12-13 16:08:36,884 INFO L226 Difference]: Without dead ends: 28945 [2022-12-13 16:08:36,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:36,901 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 58 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:36,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3181 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28945 states. [2022-12-13 16:08:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28945 to 28943. [2022-12-13 16:08:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28943 states, 28941 states have (on average 1.387858056045057) internal successors, (40166), 28942 states have internal predecessors, (40166), 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 16:08:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28943 states to 28943 states and 40166 transitions. [2022-12-13 16:08:42,381 INFO L78 Accepts]: Start accepts. Automaton has 28943 states and 40166 transitions. Word has length 109 [2022-12-13 16:08:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:42,381 INFO L495 AbstractCegarLoop]: Abstraction has 28943 states and 40166 transitions. [2022-12-13 16:08:42,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 16:08:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 28943 states and 40166 transitions. [2022-12-13 16:08:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:08:42,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:42,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:42,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:08:42,385 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2064578059, now seen corresponding path program 1 times [2022-12-13 16:08:42,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:42,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590217698] [2022-12-13 16:08:42,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:42,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:42,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590217698] [2022-12-13 16:08:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590217698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:42,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922165218] [2022-12-13 16:08:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:42,445 INFO L87 Difference]: Start difference. First operand 28943 states and 40166 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 16:08:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:45,354 INFO L93 Difference]: Finished difference Result 40371 states and 56216 transitions. [2022-12-13 16:08:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:45,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-12-13 16:08:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:45,368 INFO L225 Difference]: With dead ends: 40371 [2022-12-13 16:08:45,369 INFO L226 Difference]: Without dead ends: 17521 [2022-12-13 16:08:45,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:45,377 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 55 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:45,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3166 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17521 states. [2022-12-13 16:08:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17521 to 17519. [2022-12-13 16:08:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17519 states, 17517 states have (on average 1.3690700462407948) internal successors, (23982), 17518 states have internal predecessors, (23982), 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 16:08:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17519 states to 17519 states and 23982 transitions. [2022-12-13 16:08:47,974 INFO L78 Accepts]: Start accepts. Automaton has 17519 states and 23982 transitions. Word has length 111 [2022-12-13 16:08:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:47,974 INFO L495 AbstractCegarLoop]: Abstraction has 17519 states and 23982 transitions. [2022-12-13 16:08:47,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 16:08:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 17519 states and 23982 transitions. [2022-12-13 16:08:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:08:47,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:47,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:08:47,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1057117469, now seen corresponding path program 1 times [2022-12-13 16:08:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684360265] [2022-12-13 16:08:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:48,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684360265] [2022-12-13 16:08:48,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684360265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:48,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457823511] [2022-12-13 16:08:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:48,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:48,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:48,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:48,032 INFO L87 Difference]: Start difference. First operand 17519 states and 23982 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 16:08:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:49,358 INFO L93 Difference]: Finished difference Result 23235 states and 31940 transitions. [2022-12-13 16:08:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:49,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2022-12-13 16:08:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:49,368 INFO L225 Difference]: With dead ends: 23235 [2022-12-13 16:08:49,368 INFO L226 Difference]: Without dead ends: 11809 [2022-12-13 16:08:49,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:49,374 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 52 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:49,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3151 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2022-12-13 16:08:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 11807. [2022-12-13 16:08:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11807 states, 11805 states have (on average 1.3518000847098688) internal successors, (15958), 11806 states have internal predecessors, (15958), 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 16:08:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11807 states to 11807 states and 15958 transitions. [2022-12-13 16:08:50,721 INFO L78 Accepts]: Start accepts. Automaton has 11807 states and 15958 transitions. Word has length 113 [2022-12-13 16:08:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:50,722 INFO L495 AbstractCegarLoop]: Abstraction has 11807 states and 15958 transitions. [2022-12-13 16:08:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 16:08:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11807 states and 15958 transitions. [2022-12-13 16:08:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:08:50,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:50,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:50,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 16:08:50,723 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1472279215, now seen corresponding path program 1 times [2022-12-13 16:08:50,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:50,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780163833] [2022-12-13 16:08:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:50,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:50,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780163833] [2022-12-13 16:08:50,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780163833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:50,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:50,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451753539] [2022-12-13 16:08:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:50,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:50,794 INFO L87 Difference]: Start difference. First operand 11807 states and 15958 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 16:08:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:51,677 INFO L93 Difference]: Finished difference Result 14667 states and 19904 transitions. [2022-12-13 16:08:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-12-13 16:08:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:51,684 INFO L225 Difference]: With dead ends: 14667 [2022-12-13 16:08:51,684 INFO L226 Difference]: Without dead ends: 8953 [2022-12-13 16:08:51,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:51,687 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 49 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:51,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3136 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8953 states. [2022-12-13 16:08:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8953 to 8951. [2022-12-13 16:08:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 8949 states have (on average 1.338697061124148) internal successors, (11980), 8950 states have internal predecessors, (11980), 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 16:08:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 11980 transitions. [2022-12-13 16:08:52,392 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 11980 transitions. Word has length 115 [2022-12-13 16:08:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 11980 transitions. [2022-12-13 16:08:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 16:08:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 11980 transitions. [2022-12-13 16:08:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 16:08:52,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:52,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:52,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:08:52,393 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 65580737, now seen corresponding path program 1 times [2022-12-13 16:08:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:52,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21879136] [2022-12-13 16:08:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:52,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:52,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21879136] [2022-12-13 16:08:52,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21879136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:52,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:52,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454512689] [2022-12-13 16:08:52,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:52,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:52,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:52,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:52,450 INFO L87 Difference]: Start difference. First operand 8951 states and 11980 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 16:08:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:52,998 INFO L93 Difference]: Finished difference Result 10383 states and 13937 transitions. [2022-12-13 16:08:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-12-13 16:08:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:53,005 INFO L225 Difference]: With dead ends: 10383 [2022-12-13 16:08:53,005 INFO L226 Difference]: Without dead ends: 7525 [2022-12-13 16:08:53,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:53,009 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 46 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:53,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3121 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7525 states. [2022-12-13 16:08:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7525 to 7523. [2022-12-13 16:08:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7523 states, 7521 states have (on average 1.3306741124850419) internal successors, (10008), 7522 states have internal predecessors, (10008), 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 16:08:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 10008 transitions. [2022-12-13 16:08:53,502 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 10008 transitions. Word has length 117 [2022-12-13 16:08:53,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:53,502 INFO L495 AbstractCegarLoop]: Abstraction has 7523 states and 10008 transitions. [2022-12-13 16:08:53,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 16:08:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 10008 transitions. [2022-12-13 16:08:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 16:08:53,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:53,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:53,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 16:08:53,503 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -788666029, now seen corresponding path program 1 times [2022-12-13 16:08:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:53,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098447314] [2022-12-13 16:08:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:54,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098447314] [2022-12-13 16:08:54,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098447314] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:54,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281766791] [2022-12-13 16:08:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:54,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:54,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:08:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:54,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:08:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:08:54,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:08:54,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281766791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:54,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:54,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2022-12-13 16:08:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672909545] [2022-12-13 16:08:54,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 16:08:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 16:08:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:08:54,898 INFO L87 Difference]: Start difference. First operand 7523 states and 10008 transitions. Second operand has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 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 16:09:06,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:06,093 INFO L93 Difference]: Finished difference Result 23506 states and 31081 transitions. [2022-12-13 16:09:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-13 16:09:06,094 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 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 119 [2022-12-13 16:09:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:06,109 INFO L225 Difference]: With dead ends: 23506 [2022-12-13 16:09:06,109 INFO L226 Difference]: Without dead ends: 22076 [2022-12-13 16:09:06,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1072, Invalid=4934, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 16:09:06,113 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 20485 mSDsluCounter, 3898 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20485 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:06,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20485 Valid, 5468 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 16:09:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22076 states. [2022-12-13 16:09:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22076 to 17290. [2022-12-13 16:09:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17290 states, 17288 states have (on average 1.3179083757519667) internal successors, (22784), 17289 states have internal predecessors, (22784), 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 16:09:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17290 states to 17290 states and 22784 transitions. [2022-12-13 16:09:09,264 INFO L78 Accepts]: Start accepts. Automaton has 17290 states and 22784 transitions. Word has length 119 [2022-12-13 16:09:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:09:09,264 INFO L495 AbstractCegarLoop]: Abstraction has 17290 states and 22784 transitions. [2022-12-13 16:09:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.0) internal successors, (340), 17 states have internal predecessors, (340), 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 16:09:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 17290 states and 22784 transitions. [2022-12-13 16:09:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 16:09:09,265 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:09:09,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:09,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:09:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:09,467 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:09:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1664017124, now seen corresponding path program 1 times [2022-12-13 16:09:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:09,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694997851] [2022-12-13 16:09:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:09,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:09,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694997851] [2022-12-13 16:09:09,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694997851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:09:09,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678094219] [2022-12-13 16:09:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:09,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:09:09,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:09:09,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:09:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:10,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:09:10,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:09:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:10,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:09:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:12,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678094219] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:09:12,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:09:12,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2022-12-13 16:09:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698704742] [2022-12-13 16:09:12,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:09:12,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 16:09:12,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 16:09:12,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:09:12,082 INFO L87 Difference]: Start difference. First operand 17290 states and 22784 transitions. Second operand has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 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 16:09:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:29,768 INFO L93 Difference]: Finished difference Result 58269 states and 75535 transitions. [2022-12-13 16:09:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 16:09:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 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 120 [2022-12-13 16:09:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:29,808 INFO L225 Difference]: With dead ends: 58269 [2022-12-13 16:09:29,808 INFO L226 Difference]: Without dead ends: 47356 [2022-12-13 16:09:29,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2985 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1826, Invalid=7876, Unknown=0, NotChecked=0, Total=9702 [2022-12-13 16:09:29,820 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 20235 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20235 SdHoareTripleChecker+Valid, 13739 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:29,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20235 Valid, 13739 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 16:09:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47356 states. [2022-12-13 16:09:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47356 to 28475. [2022-12-13 16:09:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28475 states, 28473 states have (on average 1.306922347487093) internal successors, (37212), 28474 states have internal predecessors, (37212), 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 16:09:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28475 states to 28475 states and 37212 transitions. [2022-12-13 16:09:37,283 INFO L78 Accepts]: Start accepts. Automaton has 28475 states and 37212 transitions. Word has length 120 [2022-12-13 16:09:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:09:37,283 INFO L495 AbstractCegarLoop]: Abstraction has 28475 states and 37212 transitions. [2022-12-13 16:09:37,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.757575757575758) internal successors, (322), 33 states have internal predecessors, (322), 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 16:09:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 28475 states and 37212 transitions. [2022-12-13 16:09:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 16:09:37,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:09:37,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:37,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:09:37,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:37,486 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:09:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash -525912434, now seen corresponding path program 1 times [2022-12-13 16:09:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454900110] [2022-12-13 16:09:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454900110] [2022-12-13 16:09:37,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454900110] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:09:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421766108] [2022-12-13 16:09:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:09:37,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:09:37,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:09:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:37,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:09:37,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:09:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:38,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:09:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:39,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421766108] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:09:39,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:09:39,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-13 16:09:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277008678] [2022-12-13 16:09:39,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:09:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 16:09:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 16:09:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:09:39,480 INFO L87 Difference]: Start difference. First operand 28475 states and 37212 transitions. Second operand has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 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 16:09:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:49,787 INFO L93 Difference]: Finished difference Result 54933 states and 70602 transitions. [2022-12-13 16:09:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:09:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 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 120 [2022-12-13 16:09:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:49,818 INFO L225 Difference]: With dead ends: 54933 [2022-12-13 16:09:49,818 INFO L226 Difference]: Without dead ends: 33883 [2022-12-13 16:09:49,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:09:49,830 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 14248 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14248 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:49,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14248 Valid, 4923 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 16:09:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33883 states. [2022-12-13 16:09:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33883 to 24883. [2022-12-13 16:09:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24883 states, 24881 states have (on average 1.285076966359873) internal successors, (31974), 24882 states have internal predecessors, (31974), 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 16:09:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24883 states to 24883 states and 31974 transitions. [2022-12-13 16:09:57,137 INFO L78 Accepts]: Start accepts. Automaton has 24883 states and 31974 transitions. Word has length 120 [2022-12-13 16:09:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:09:57,137 INFO L495 AbstractCegarLoop]: Abstraction has 24883 states and 31974 transitions. [2022-12-13 16:09:57,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.714285714285714) internal successors, (288), 20 states have internal predecessors, (288), 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 16:09:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 24883 states and 31974 transitions. [2022-12-13 16:09:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 16:09:57,139 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:09:57,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:57,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 16:09:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:57,340 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:09:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1679714446, now seen corresponding path program 1 times [2022-12-13 16:09:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:57,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111779694] [2022-12-13 16:09:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111779694] [2022-12-13 16:09:58,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111779694] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:09:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839167368] [2022-12-13 16:09:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:58,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:09:58,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:09:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:09:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:58,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 16:09:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:09:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:58,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:09:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:09:59,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839167368] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:09:59,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:09:59,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2022-12-13 16:09:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452905342] [2022-12-13 16:09:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:09:59,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 16:09:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 16:09:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:09:59,886 INFO L87 Difference]: Start difference. First operand 24883 states and 31974 transitions. Second operand has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 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 16:10:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:10:21,990 INFO L93 Difference]: Finished difference Result 79783 states and 101794 transitions. [2022-12-13 16:10:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:10:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 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 120 [2022-12-13 16:10:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:10:22,051 INFO L225 Difference]: With dead ends: 79783 [2022-12-13 16:10:22,051 INFO L226 Difference]: Without dead ends: 61707 [2022-12-13 16:10:22,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=353, Invalid=1207, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 16:10:22,067 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 19070 mSDsluCounter, 5240 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19070 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:10:22,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19070 Valid, 6797 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 16:10:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61707 states. [2022-12-13 16:10:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61707 to 43843. [2022-12-13 16:10:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43843 states, 43841 states have (on average 1.2692228735658402) internal successors, (55644), 43842 states have internal predecessors, (55644), 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 16:10:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43843 states to 43843 states and 55644 transitions. [2022-12-13 16:10:36,360 INFO L78 Accepts]: Start accepts. Automaton has 43843 states and 55644 transitions. Word has length 120 [2022-12-13 16:10:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:10:36,360 INFO L495 AbstractCegarLoop]: Abstraction has 43843 states and 55644 transitions. [2022-12-13 16:10:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 26 states have internal predecessors, (308), 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 16:10:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43843 states and 55644 transitions. [2022-12-13 16:10:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 16:10:36,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:10:36,361 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:10:36,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:10:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 16:10:36,563 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:10:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:10:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash -845344351, now seen corresponding path program 1 times [2022-12-13 16:10:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:10:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515427763] [2022-12-13 16:10:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:10:36,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:10:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:10:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:10:36,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:10:36,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515427763] [2022-12-13 16:10:36,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515427763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:10:36,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458204798] [2022-12-13 16:10:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:10:36,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:10:36,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:10:36,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:10:36,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:10:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:10:36,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:10:36,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:10:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:10:37,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:10:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:10:38,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458204798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:10:38,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:10:38,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2022-12-13 16:10:38,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800887978] [2022-12-13 16:10:38,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:10:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 16:10:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:10:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 16:10:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-12-13 16:10:38,783 INFO L87 Difference]: Start difference. First operand 43843 states and 55644 transitions. Second operand has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 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 16:12:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:12:37,367 INFO L93 Difference]: Finished difference Result 336135 states and 432095 transitions. [2022-12-13 16:12:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 16:12:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 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 121 [2022-12-13 16:12:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:12:37,755 INFO L225 Difference]: With dead ends: 336135 [2022-12-13 16:12:37,755 INFO L226 Difference]: Without dead ends: 298783 [2022-12-13 16:12:37,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1146, Invalid=5016, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 16:12:37,824 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 28078 mSDsluCounter, 9248 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28078 SdHoareTripleChecker+Valid, 10859 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:12:37,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28078 Valid, 10859 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 16:12:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298783 states. [2022-12-13 16:13:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298783 to 154623. [2022-12-13 16:13:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154623 states, 154621 states have (on average 1.2470686388006804) internal successors, (192823), 154622 states have internal predecessors, (192823), 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 16:13:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154623 states to 154623 states and 192823 transitions. [2022-12-13 16:13:38,661 INFO L78 Accepts]: Start accepts. Automaton has 154623 states and 192823 transitions. Word has length 121 [2022-12-13 16:13:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:13:38,661 INFO L495 AbstractCegarLoop]: Abstraction has 154623 states and 192823 transitions. [2022-12-13 16:13:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.03225806451613) internal successors, (311), 31 states have internal predecessors, (311), 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 16:13:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 154623 states and 192823 transitions. [2022-12-13 16:13:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 16:13:38,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:13:38,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:38,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:13:38,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:38,866 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:13:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash -775860235, now seen corresponding path program 1 times [2022-12-13 16:13:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:38,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419966874] [2022-12-13 16:13:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:13:39,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:39,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419966874] [2022-12-13 16:13:39,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419966874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:39,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402351894] [2022-12-13 16:13:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:39,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:39,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:39,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c7bf0f-ae55-4d3f-ac86-6eb4a3eedb9e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:13:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:39,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 16:13:39,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:13:40,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:13:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:13:41,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402351894] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:13:41,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:13:41,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-12-13 16:13:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983226255] [2022-12-13 16:13:41,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:13:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 16:13:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 16:13:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:13:41,540 INFO L87 Difference]: Start difference. First operand 154623 states and 192823 transitions. Second operand has 32 states, 32 states have (on average 11.03125) internal successors, (353), 32 states have internal predecessors, (353), 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)