./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/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 18046378c6d1547b773fdd7b2a077336efb6ec59b5b2498774315388e2558fbc --- 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 16:24:57,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:24:57,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:24:57,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:24:57,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:24:57,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:24:57,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:24:58,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:24:58,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:24:58,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:24:58,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:24:58,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:24:58,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:24:58,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:24:58,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:24:58,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:24:58,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:24:58,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:24:58,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:24:58,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:24:58,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:24:58,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:24:58,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:24:58,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:24:58,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:24:58,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:24:58,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:24:58,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:24:58,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:24:58,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:24:58,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:24:58,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:24:58,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:24:58,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:24:58,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:24:58,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:24:58,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:24:58,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:24:58,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:24:58,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:24:58,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:24:58,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:24:58,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:24:58,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:24:58,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:24:58,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:24:58,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:24:58,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:24:58,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:24:58,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:24:58,047 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:24:58,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:24:58,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:24:58,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:24:58,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:24:58,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:24:58,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:24:58,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:24:58,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:24:58,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:24:58,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:24:58,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:24:58,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:24:58,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:24:58,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:24:58,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:24:58,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:24:58,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:24:58,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:24:58,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:24:58,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:24:58,052 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:24:58,052 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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18046378c6d1547b773fdd7b2a077336efb6ec59b5b2498774315388e2558fbc [2022-12-13 16:24:58,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:24:58,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:24:58,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:24:58,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:24:58,272 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:24:58,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c [2022-12-13 16:25:00,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:25:01,232 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:25:01,232 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c [2022-12-13 16:25:01,256 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/data/44173b626/061acf48dc7b4fb786113167a1a351c6/FLAG8612494d0 [2022-12-13 16:25:01,424 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/data/44173b626/061acf48dc7b4fb786113167a1a351c6 [2022-12-13 16:25:01,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:25:01,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:25:01,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:25:01,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:25:01,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:25:01,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:25:01" (1/1) ... [2022-12-13 16:25:01,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9adfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:01, skipping insertion in model container [2022-12-13 16:25:01,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:25:01" (1/1) ... [2022-12-13 16:25:01,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:25:01,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:25:01,802 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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c[15519,15532] [2022-12-13 16:25:01,845 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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c[22809,22822] [2022-12-13 16:25:02,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:25:02,427 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:25:02,457 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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c[15519,15532] [2022-12-13 16:25:02,468 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_763f86e1-afcf-4512-b1de-3aeae8a80ea8/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c[22809,22822] [2022-12-13 16:25:02,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:25:02,925 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:25:02,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02 WrapperNode [2022-12-13 16:25:02,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:25:02,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:25:02,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:25:02,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:25:02,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:02,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,214 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5126 [2022-12-13 16:25:03,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:25:03,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:25:03,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:25:03,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:25:03,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:25:03,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:25:03,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:25:03,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:25:03,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (1/1) ... [2022-12-13 16:25:03,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:25:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:25:03,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:25:03,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:25:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:25:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:25:03,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:25:03,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:25:03,712 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:25:03,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:25:07,190 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:25:07,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:25:07,206 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:25:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:25:07 BoogieIcfgContainer [2022-12-13 16:25:07,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:25:07,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:25:07,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:25:07,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:25:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:25:01" (1/3) ... [2022-12-13 16:25:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76032688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:25:07, skipping insertion in model container [2022-12-13 16:25:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:02" (2/3) ... [2022-12-13 16:25:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76032688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:25:07, skipping insertion in model container [2022-12-13 16:25:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:25:07" (3/3) ... [2022-12-13 16:25:07,218 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label02.c [2022-12-13 16:25:07,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:25:07,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 16:25:07,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:25:07,310 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;@44805fc8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:25:07,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 16:25:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 911 states have (on average 1.9045005488474205) internal successors, (1735), 913 states have internal predecessors, (1735), 0 states have call successors, (0), 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 16:25:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 16:25:07,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:07,325 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] [2022-12-13 16:25:07,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1509915646, now seen corresponding path program 1 times [2022-12-13 16:25:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848105241] [2022-12-13 16:25:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:07,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:07,518 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 16:25:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:07,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848105241] [2022-12-13 16:25:07,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848105241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:07,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:07,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:25:07,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025016325] [2022-12-13 16:25:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:07,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:25:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:07,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:25:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:25:07,553 INFO L87 Difference]: Start difference. First operand has 914 states, 911 states have (on average 1.9045005488474205) internal successors, (1735), 913 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:07,631 INFO L93 Difference]: Finished difference Result 1782 states and 3382 transitions. [2022-12-13 16:25:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:25:07,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 16:25:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:07,650 INFO L225 Difference]: With dead ends: 1782 [2022-12-13 16:25:07,650 INFO L226 Difference]: Without dead ends: 848 [2022-12-13 16:25:07,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:25:07,659 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:07,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-13 16:25:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-12-13 16:25:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.8936170212765957) internal successors, (1602), 847 states have internal predecessors, (1602), 0 states have call successors, (0), 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 16:25:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1602 transitions. [2022-12-13 16:25:07,730 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1602 transitions. Word has length 26 [2022-12-13 16:25:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:07,730 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1602 transitions. [2022-12-13 16:25:07,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1602 transitions. [2022-12-13 16:25:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 16:25:07,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:07,732 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] [2022-12-13 16:25:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:25:07,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1967403200, now seen corresponding path program 1 times [2022-12-13 16:25:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645735846] [2022-12-13 16:25:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:07,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:07,935 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 16:25:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645735846] [2022-12-13 16:25:07,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645735846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:07,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:07,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:25:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494877271] [2022-12-13 16:25:07,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:07,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:25:07,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:25:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:25:07,939 INFO L87 Difference]: Start difference. First operand 848 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:08,071 INFO L93 Difference]: Finished difference Result 900 states and 1683 transitions. [2022-12-13 16:25:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:25:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 16:25:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:08,076 INFO L225 Difference]: With dead ends: 900 [2022-12-13 16:25:08,076 INFO L226 Difference]: Without dead ends: 848 [2022-12-13 16:25:08,077 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 16:25:08,079 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 3 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6357 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:08,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6357 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-13 16:25:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-12-13 16:25:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.846335697399527) internal successors, (1562), 847 states have internal predecessors, (1562), 0 states have call successors, (0), 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 16:25:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1562 transitions. [2022-12-13 16:25:08,103 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1562 transitions. Word has length 26 [2022-12-13 16:25:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:08,104 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1562 transitions. [2022-12-13 16:25:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1562 transitions. [2022-12-13 16:25:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 16:25:08,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:08,106 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] [2022-12-13 16:25:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:25:08,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1966364634, now seen corresponding path program 1 times [2022-12-13 16:25:08,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:08,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397416391] [2022-12-13 16:25:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:08,295 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 16:25:08,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:08,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397416391] [2022-12-13 16:25:08,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397416391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:08,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510864183] [2022-12-13 16:25:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:08,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:25:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:25:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:25:08,299 INFO L87 Difference]: Start difference. First operand 848 states and 1562 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 16:25:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:14,260 INFO L93 Difference]: Finished difference Result 3103 states and 5871 transitions. [2022-12-13 16:25:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:25:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-12-13 16:25:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:14,265 INFO L225 Difference]: With dead ends: 3103 [2022-12-13 16:25:14,265 INFO L226 Difference]: Without dead ends: 2350 [2022-12-13 16:25:14,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:25:14,266 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2433 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:14,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 816 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 16:25:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2022-12-13 16:25:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2022-12-13 16:25:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2348 states have (on average 1.565587734241908) internal successors, (3676), 2349 states have internal predecessors, (3676), 0 states have call successors, (0), 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 16:25:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3676 transitions. [2022-12-13 16:25:14,311 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3676 transitions. Word has length 63 [2022-12-13 16:25:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:14,312 INFO L495 AbstractCegarLoop]: Abstraction has 2350 states and 3676 transitions. [2022-12-13 16:25:14,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 16:25:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3676 transitions. [2022-12-13 16:25:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 16:25:14,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:14,315 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] [2022-12-13 16:25:14,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:25:14,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 223622668, now seen corresponding path program 1 times [2022-12-13 16:25:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:14,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820747121] [2022-12-13 16:25:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:14,491 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 16:25:14,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820747121] [2022-12-13 16:25:14,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820747121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:14,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:14,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23734752] [2022-12-13 16:25:14,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:14,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:14,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:14,494 INFO L87 Difference]: Start difference. First operand 2350 states and 3676 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:14,737 INFO L93 Difference]: Finished difference Result 2926 states and 4600 transitions. [2022-12-13 16:25:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:25:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 16:25:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:14,746 INFO L225 Difference]: With dead ends: 2926 [2022-12-13 16:25:14,746 INFO L226 Difference]: Without dead ends: 2878 [2022-12-13 16:25:14,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:25:14,748 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 9699 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9699 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:14,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9699 Valid, 3692 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:25:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2022-12-13 16:25:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2396. [2022-12-13 16:25:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2394 states have (on average 1.5664160401002507) internal successors, (3750), 2395 states have internal predecessors, (3750), 0 states have call successors, (0), 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 16:25:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3750 transitions. [2022-12-13 16:25:14,808 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3750 transitions. Word has length 65 [2022-12-13 16:25:14,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:14,808 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 3750 transitions. [2022-12-13 16:25:14,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:14,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3750 transitions. [2022-12-13 16:25:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 16:25:14,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:14,810 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] [2022-12-13 16:25:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:25:14,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1262675076, now seen corresponding path program 1 times [2022-12-13 16:25:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:14,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922785142] [2022-12-13 16:25:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:14,872 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 16:25:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922785142] [2022-12-13 16:25:14,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922785142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:14,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905352345] [2022-12-13 16:25:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:14,875 INFO L87 Difference]: Start difference. First operand 2396 states and 3750 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:25:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:14,914 INFO L93 Difference]: Finished difference Result 2573 states and 4033 transitions. [2022-12-13 16:25:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-13 16:25:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:14,922 INFO L225 Difference]: With dead ends: 2573 [2022-12-13 16:25:14,923 INFO L226 Difference]: Without dead ends: 2479 [2022-12-13 16:25:14,924 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 16:25:14,925 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1490 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:14,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1632 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-12-13 16:25:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2022-12-13 16:25:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.566868686868687) internal successors, (3878), 2476 states have internal predecessors, (3878), 0 states have call successors, (0), 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 16:25:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3878 transitions. [2022-12-13 16:25:14,981 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3878 transitions. Word has length 67 [2022-12-13 16:25:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:14,982 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3878 transitions. [2022-12-13 16:25:14,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:25:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3878 transitions. [2022-12-13 16:25:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 16:25:14,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:14,983 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] [2022-12-13 16:25:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:25:14,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1196181564, now seen corresponding path program 1 times [2022-12-13 16:25:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:14,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904016413] [2022-12-13 16:25:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:15,201 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 16:25:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904016413] [2022-12-13 16:25:15,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904016413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:15,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:15,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786962631] [2022-12-13 16:25:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:15,204 INFO L87 Difference]: Start difference. First operand 2477 states and 3878 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:25:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:15,403 INFO L93 Difference]: Finished difference Result 2654 states and 4158 transitions. [2022-12-13 16:25:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:25:15,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-13 16:25:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:15,410 INFO L225 Difference]: With dead ends: 2654 [2022-12-13 16:25:15,410 INFO L226 Difference]: Without dead ends: 2479 [2022-12-13 16:25:15,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:25:15,413 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 7500 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7500 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:15,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7500 Valid, 1925 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-12-13 16:25:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2022-12-13 16:25:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.5660606060606062) internal successors, (3876), 2476 states have internal predecessors, (3876), 0 states have call successors, (0), 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 16:25:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3876 transitions. [2022-12-13 16:25:15,488 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3876 transitions. Word has length 67 [2022-12-13 16:25:15,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:15,488 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3876 transitions. [2022-12-13 16:25:15,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 16:25:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3876 transitions. [2022-12-13 16:25:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 16:25:15,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:15,490 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] [2022-12-13 16:25:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:25:15,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1158354181, now seen corresponding path program 1 times [2022-12-13 16:25:15,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:15,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414581602] [2022-12-13 16:25:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:15,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:15,669 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 16:25:15,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:15,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414581602] [2022-12-13 16:25:15,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414581602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:15,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:15,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:25:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46335948] [2022-12-13 16:25:15,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:15,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:25:15,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:25:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:25:15,671 INFO L87 Difference]: Start difference. First operand 2477 states and 3876 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:25:15,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:15,774 INFO L93 Difference]: Finished difference Result 2649 states and 4143 transitions. [2022-12-13 16:25:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:25:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-12-13 16:25:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:15,782 INFO L225 Difference]: With dead ends: 2649 [2022-12-13 16:25:15,782 INFO L226 Difference]: Without dead ends: 2647 [2022-12-13 16:25:15,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:15,784 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 202 mSDsluCounter, 4688 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 6318 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:15,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 6318 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-12-13 16:25:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2483. [2022-12-13 16:25:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5642885933091495) internal successors, (3881), 2482 states have internal predecessors, (3881), 0 states have call successors, (0), 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 16:25:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3881 transitions. [2022-12-13 16:25:15,847 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3881 transitions. Word has length 68 [2022-12-13 16:25:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:15,848 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3881 transitions. [2022-12-13 16:25:15,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 16:25:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3881 transitions. [2022-12-13 16:25:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:15,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:15,849 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] [2022-12-13 16:25:15,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:25:15,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1759773380, now seen corresponding path program 1 times [2022-12-13 16:25:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:15,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45248492] [2022-12-13 16:25:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:15,904 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 16:25:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:15,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45248492] [2022-12-13 16:25:15,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45248492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:15,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:15,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917847496] [2022-12-13 16:25:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:15,906 INFO L87 Difference]: Start difference. First operand 2483 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:15,968 INFO L93 Difference]: Finished difference Result 2677 states and 4182 transitions. [2022-12-13 16:25:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:15,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:15,975 INFO L225 Difference]: With dead ends: 2677 [2022-12-13 16:25:15,975 INFO L226 Difference]: Without dead ends: 2577 [2022-12-13 16:25:15,976 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 16:25:15,977 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1506 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1702 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 16:25:15,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1702 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2022-12-13 16:25:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2575. [2022-12-13 16:25:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2573 states have (on average 1.5631558492032647) internal successors, (4022), 2574 states have internal predecessors, (4022), 0 states have call successors, (0), 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 16:25:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4022 transitions. [2022-12-13 16:25:16,041 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4022 transitions. Word has length 69 [2022-12-13 16:25:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:16,042 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 4022 transitions. [2022-12-13 16:25:16,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4022 transitions. [2022-12-13 16:25:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:16,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:16,043 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] [2022-12-13 16:25:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:25:16,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1922687940, now seen corresponding path program 1 times [2022-12-13 16:25:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961225165] [2022-12-13 16:25:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:16,081 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 16:25:16,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:16,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961225165] [2022-12-13 16:25:16,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961225165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:16,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:16,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802412979] [2022-12-13 16:25:16,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:16,083 INFO L87 Difference]: Start difference. First operand 2575 states and 4022 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:16,142 INFO L93 Difference]: Finished difference Result 3093 states and 4822 transitions. [2022-12-13 16:25:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:16,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:16,147 INFO L225 Difference]: With dead ends: 3093 [2022-12-13 16:25:16,147 INFO L226 Difference]: Without dead ends: 2822 [2022-12-13 16:25:16,149 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 16:25:16,149 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1504 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1708 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 16:25:16,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-12-13 16:25:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2820. [2022-12-13 16:25:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2818 states have (on average 1.5592618878637332) internal successors, (4394), 2819 states have internal predecessors, (4394), 0 states have call successors, (0), 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 16:25:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4394 transitions. [2022-12-13 16:25:16,221 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4394 transitions. Word has length 69 [2022-12-13 16:25:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:16,221 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 4394 transitions. [2022-12-13 16:25:16,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4394 transitions. [2022-12-13 16:25:16,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:16,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:16,222 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] [2022-12-13 16:25:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:25:16,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash -870160956, now seen corresponding path program 1 times [2022-12-13 16:25:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:16,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304421823] [2022-12-13 16:25:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:16,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:16,255 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 16:25:16,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:16,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304421823] [2022-12-13 16:25:16,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304421823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:16,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:16,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972903659] [2022-12-13 16:25:16,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:16,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:16,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:16,256 INFO L87 Difference]: Start difference. First operand 2820 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:16,373 INFO L93 Difference]: Finished difference Result 3804 states and 5896 transitions. [2022-12-13 16:25:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:16,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:16,380 INFO L225 Difference]: With dead ends: 3804 [2022-12-13 16:25:16,380 INFO L226 Difference]: Without dead ends: 3288 [2022-12-13 16:25:16,381 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 16:25:16,382 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1500 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1704 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 16:25:16,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2022-12-13 16:25:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3286. [2022-12-13 16:25:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3284 states have (on average 1.5499390986601704) internal successors, (5090), 3285 states have internal predecessors, (5090), 0 states have call successors, (0), 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 16:25:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5090 transitions. [2022-12-13 16:25:16,494 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5090 transitions. Word has length 69 [2022-12-13 16:25:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:16,494 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 5090 transitions. [2022-12-13 16:25:16,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5090 transitions. [2022-12-13 16:25:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:16,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:16,495 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] [2022-12-13 16:25:16,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:25:16,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1209337540, now seen corresponding path program 1 times [2022-12-13 16:25:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:16,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571945856] [2022-12-13 16:25:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:16,527 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 16:25:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:16,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571945856] [2022-12-13 16:25:16,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571945856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:16,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:16,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706749571] [2022-12-13 16:25:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:16,528 INFO L87 Difference]: Start difference. First operand 3286 states and 5090 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:16,752 INFO L93 Difference]: Finished difference Result 5154 states and 7900 transitions. [2022-12-13 16:25:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:16,764 INFO L225 Difference]: With dead ends: 5154 [2022-12-13 16:25:16,764 INFO L226 Difference]: Without dead ends: 4172 [2022-12-13 16:25:16,766 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 16:25:16,767 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1498 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1706 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 16:25:16,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1706 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2022-12-13 16:25:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 4170. [2022-12-13 16:25:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 4168 states have (on average 1.5321497120921306) internal successors, (6386), 4169 states have internal predecessors, (6386), 0 states have call successors, (0), 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 16:25:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6386 transitions. [2022-12-13 16:25:16,960 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6386 transitions. Word has length 69 [2022-12-13 16:25:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:16,960 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6386 transitions. [2022-12-13 16:25:16,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6386 transitions. [2022-12-13 16:25:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:16,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:16,961 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] [2022-12-13 16:25:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:25:16,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1304696892, now seen corresponding path program 1 times [2022-12-13 16:25:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:16,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139150204] [2022-12-13 16:25:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:16,998 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 16:25:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:16,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139150204] [2022-12-13 16:25:16,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139150204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:16,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:16,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595762022] [2022-12-13 16:25:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:16,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:16,999 INFO L87 Difference]: Start difference. First operand 4170 states and 6386 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:17,323 INFO L93 Difference]: Finished difference Result 7710 states and 11620 transitions. [2022-12-13 16:25:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:17,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:17,334 INFO L225 Difference]: With dead ends: 7710 [2022-12-13 16:25:17,334 INFO L226 Difference]: Without dead ends: 5844 [2022-12-13 16:25:17,337 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 16:25:17,337 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1496 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1708 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 16:25:17,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2022-12-13 16:25:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 5842. [2022-12-13 16:25:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5842 states, 5840 states have (on average 1.5044520547945206) internal successors, (8786), 5841 states have internal predecessors, (8786), 0 states have call successors, (0), 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 16:25:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 8786 transitions. [2022-12-13 16:25:17,713 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 8786 transitions. Word has length 69 [2022-12-13 16:25:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:17,714 INFO L495 AbstractCegarLoop]: Abstraction has 5842 states and 8786 transitions. [2022-12-13 16:25:17,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 8786 transitions. [2022-12-13 16:25:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:25:17,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:17,715 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] [2022-12-13 16:25:17,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:25:17,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2108422972, now seen corresponding path program 1 times [2022-12-13 16:25:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:17,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809672718] [2022-12-13 16:25:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:17,764 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 16:25:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:17,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809672718] [2022-12-13 16:25:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809672718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:25:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592589876] [2022-12-13 16:25:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:25:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:25:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:25:17,766 INFO L87 Difference]: Start difference. First operand 5842 states and 8786 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:18,468 INFO L93 Difference]: Finished difference Result 12534 states and 18484 transitions. [2022-12-13 16:25:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:25:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 16:25:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:18,480 INFO L225 Difference]: With dead ends: 12534 [2022-12-13 16:25:18,480 INFO L226 Difference]: Without dead ends: 8996 [2022-12-13 16:25:18,483 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 16:25:18,483 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1502 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1710 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 16:25:18,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:25:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2022-12-13 16:25:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 8994. [2022-12-13 16:25:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 8992 states have (on average 1.468193950177936) internal successors, (13202), 8993 states have internal predecessors, (13202), 0 states have call successors, (0), 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 16:25:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 13202 transitions. [2022-12-13 16:25:19,202 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 13202 transitions. Word has length 69 [2022-12-13 16:25:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:19,202 INFO L495 AbstractCegarLoop]: Abstraction has 8994 states and 13202 transitions. [2022-12-13 16:25:19,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:25:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 13202 transitions. [2022-12-13 16:25:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:25:19,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:19,205 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] [2022-12-13 16:25:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:25:19,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2062508441, now seen corresponding path program 1 times [2022-12-13 16:25:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123380776] [2022-12-13 16:25:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:25:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123380776] [2022-12-13 16:25:19,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123380776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:19,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:19,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306448536] [2022-12-13 16:25:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:19,312 INFO L87 Difference]: Start difference. First operand 8994 states and 13202 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:25:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:24,010 INFO L93 Difference]: Finished difference Result 48592 states and 69977 transitions. [2022-12-13 16:25:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:25:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 90 [2022-12-13 16:25:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:24,080 INFO L225 Difference]: With dead ends: 48592 [2022-12-13 16:25:24,080 INFO L226 Difference]: Without dead ends: 43854 [2022-12-13 16:25:24,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:25:24,090 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 8080 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8080 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:24,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8080 Valid, 4001 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:25:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43854 states. [2022-12-13 16:25:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43854 to 14722. [2022-12-13 16:25:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14720 states have (on average 1.4490489130434783) internal successors, (21330), 14721 states have internal predecessors, (21330), 0 states have call successors, (0), 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 16:25:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 21330 transitions. [2022-12-13 16:25:25,879 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 21330 transitions. Word has length 90 [2022-12-13 16:25:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:25,879 INFO L495 AbstractCegarLoop]: Abstraction has 14722 states and 21330 transitions. [2022-12-13 16:25:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 16:25:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 21330 transitions. [2022-12-13 16:25:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:25:25,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:25,881 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] [2022-12-13 16:25:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:25:25,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1899593881, now seen corresponding path program 1 times [2022-12-13 16:25:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:25,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217053173] [2022-12-13 16:25:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:25,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:25:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:25,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217053173] [2022-12-13 16:25:25,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217053173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:25,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:25,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488700911] [2022-12-13 16:25:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:25,990 INFO L87 Difference]: Start difference. First operand 14722 states and 21330 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 16:25:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:32,694 INFO L93 Difference]: Finished difference Result 55280 states and 79513 transitions. [2022-12-13 16:25:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:25:32,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 90 [2022-12-13 16:25:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:32,749 INFO L225 Difference]: With dead ends: 55280 [2022-12-13 16:25:32,749 INFO L226 Difference]: Without dead ends: 48590 [2022-12-13 16:25:32,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:25:32,761 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 8082 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8082 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8082 Valid, 3964 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:25:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48590 states. [2022-12-13 16:25:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48590 to 23778. [2022-12-13 16:25:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23778 states, 23776 states have (on average 1.4368270524899058) internal successors, (34162), 23777 states have internal predecessors, (34162), 0 states have call successors, (0), 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 16:25:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23778 states to 23778 states and 34162 transitions. [2022-12-13 16:25:36,052 INFO L78 Accepts]: Start accepts. Automaton has 23778 states and 34162 transitions. Word has length 90 [2022-12-13 16:25:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:36,052 INFO L495 AbstractCegarLoop]: Abstraction has 23778 states and 34162 transitions. [2022-12-13 16:25:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 16:25:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 23778 states and 34162 transitions. [2022-12-13 16:25:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:25:36,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:36,058 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] [2022-12-13 16:25:36,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:25:36,058 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:36,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash -397475481, now seen corresponding path program 1 times [2022-12-13 16:25:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:36,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355160529] [2022-12-13 16:25:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:36,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:25:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:36,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355160529] [2022-12-13 16:25:36,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355160529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:36,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:36,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19663375] [2022-12-13 16:25:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:36,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:36,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:36,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:36,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:36,217 INFO L87 Difference]: Start difference. First operand 23778 states and 34162 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 16:25:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:44,660 INFO L93 Difference]: Finished difference Result 61968 states and 89017 transitions. [2022-12-13 16:25:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:25:44,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 90 [2022-12-13 16:25:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:44,723 INFO L225 Difference]: With dead ends: 61968 [2022-12-13 16:25:44,723 INFO L226 Difference]: Without dead ends: 55278 [2022-12-13 16:25:44,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:25:44,738 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8122 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8122 SdHoareTripleChecker+Valid, 4002 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:44,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8122 Valid, 4002 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:25:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55278 states. [2022-12-13 16:25:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55278 to 30466. [2022-12-13 16:25:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30466 states, 30464 states have (on average 1.4333639705882353) internal successors, (43666), 30465 states have internal predecessors, (43666), 0 states have call successors, (0), 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 16:25:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30466 states to 30466 states and 43666 transitions. [2022-12-13 16:25:49,002 INFO L78 Accepts]: Start accepts. Automaton has 30466 states and 43666 transitions. Word has length 90 [2022-12-13 16:25:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:25:49,002 INFO L495 AbstractCegarLoop]: Abstraction has 30466 states and 43666 transitions. [2022-12-13 16:25:49,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 16:25:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 30466 states and 43666 transitions. [2022-12-13 16:25:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:25:49,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:25:49,005 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] [2022-12-13 16:25:49,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:25:49,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:25:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:25:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1682023015, now seen corresponding path program 1 times [2022-12-13 16:25:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:25:49,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202981466] [2022-12-13 16:25:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:25:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:25:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:25:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:25:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:25:49,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202981466] [2022-12-13 16:25:49,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202981466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:25:49,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:25:49,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:25:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507706169] [2022-12-13 16:25:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:25:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:25:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:25:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:25:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:25:49,106 INFO L87 Difference]: Start difference. First operand 30466 states and 43666 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 16:25:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:25:57,986 INFO L93 Difference]: Finished difference Result 68656 states and 98521 transitions. [2022-12-13 16:25:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:25:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 90 [2022-12-13 16:25:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:25:58,048 INFO L225 Difference]: With dead ends: 68656 [2022-12-13 16:25:58,048 INFO L226 Difference]: Without dead ends: 61966 [2022-12-13 16:25:58,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:25:58,061 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8179 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8179 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:25:58,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8179 Valid, 3946 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:25:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61966 states. [2022-12-13 16:26:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61966 to 37154. [2022-12-13 16:26:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37154 states, 37152 states have (on average 1.4311477174849268) internal successors, (53170), 37153 states have internal predecessors, (53170), 0 states have call successors, (0), 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 16:26:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37154 states to 37154 states and 53170 transitions. [2022-12-13 16:26:03,727 INFO L78 Accepts]: Start accepts. Automaton has 37154 states and 53170 transitions. Word has length 90 [2022-12-13 16:26:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:26:03,727 INFO L495 AbstractCegarLoop]: Abstraction has 37154 states and 53170 transitions. [2022-12-13 16:26:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 16:26:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 37154 states and 53170 transitions. [2022-12-13 16:26:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:26:03,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:26:03,731 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] [2022-12-13 16:26:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:26:03,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:26:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash -832011417, now seen corresponding path program 1 times [2022-12-13 16:26:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:26:03,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288978482] [2022-12-13 16:26:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:03,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:26:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:26:03,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:26:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288978482] [2022-12-13 16:26:03,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288978482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:03,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:03,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:26:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293479416] [2022-12-13 16:26:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:03,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:26:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:26:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:26:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:26:03,875 INFO L87 Difference]: Start difference. First operand 37154 states and 53170 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 16:26:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:26:14,440 INFO L93 Difference]: Finished difference Result 75344 states and 108025 transitions. [2022-12-13 16:26:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:26:14,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 90 [2022-12-13 16:26:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:26:14,513 INFO L225 Difference]: With dead ends: 75344 [2022-12-13 16:26:14,514 INFO L226 Difference]: Without dead ends: 68654 [2022-12-13 16:26:14,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:26:14,528 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8090 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 4022 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:26:14,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 4022 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:26:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68654 states. [2022-12-13 16:26:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68654 to 43842. [2022-12-13 16:26:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43842 states, 43840 states have (on average 1.4296076642335767) internal successors, (62674), 43841 states have internal predecessors, (62674), 0 states have call successors, (0), 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 16:26:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43842 states to 43842 states and 62674 transitions. [2022-12-13 16:26:21,124 INFO L78 Accepts]: Start accepts. Automaton has 43842 states and 62674 transitions. Word has length 90 [2022-12-13 16:26:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:26:21,124 INFO L495 AbstractCegarLoop]: Abstraction has 43842 states and 62674 transitions. [2022-12-13 16:26:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 16:26:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43842 states and 62674 transitions. [2022-12-13 16:26:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:26:21,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:26:21,127 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] [2022-12-13 16:26:21,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:26:21,127 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:26:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1635737497, now seen corresponding path program 1 times [2022-12-13 16:26:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:26:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697894576] [2022-12-13 16:26:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:26:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:26:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:26:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697894576] [2022-12-13 16:26:21,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697894576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:21,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:26:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496287970] [2022-12-13 16:26:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:26:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:26:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:26:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:26:21,271 INFO L87 Difference]: Start difference. First operand 43842 states and 62674 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:26:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:26:33,733 INFO L93 Difference]: Finished difference Result 82032 states and 117529 transitions. [2022-12-13 16:26:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:26:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2022-12-13 16:26:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:26:33,812 INFO L225 Difference]: With dead ends: 82032 [2022-12-13 16:26:33,812 INFO L226 Difference]: Without dead ends: 75342 [2022-12-13 16:26:33,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:26:33,828 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 8028 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8028 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:26:33,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8028 Valid, 4154 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:26:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75342 states. [2022-12-13 16:26:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75342 to 50530. [2022-12-13 16:26:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50530 states, 50528 states have (on average 1.428475300823306) internal successors, (72178), 50529 states have internal predecessors, (72178), 0 states have call successors, (0), 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 16:26:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50530 states to 50530 states and 72178 transitions. [2022-12-13 16:26:42,303 INFO L78 Accepts]: Start accepts. Automaton has 50530 states and 72178 transitions. Word has length 90 [2022-12-13 16:26:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:26:42,303 INFO L495 AbstractCegarLoop]: Abstraction has 50530 states and 72178 transitions. [2022-12-13 16:26:42,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 16:26:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 50530 states and 72178 transitions. [2022-12-13 16:26:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 16:26:42,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:26:42,306 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] [2022-12-13 16:26:42,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:26:42,306 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:26:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1268940109, now seen corresponding path program 1 times [2022-12-13 16:26:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:26:42,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420495000] [2022-12-13 16:26:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:26:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:26:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:26:42,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420495000] [2022-12-13 16:26:42,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420495000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:42,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:42,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:26:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802313777] [2022-12-13 16:26:42,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:26:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:26:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:26:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:26:42,364 INFO L87 Difference]: Start difference. First operand 50530 states and 72178 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 16:26:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:26:50,585 INFO L93 Difference]: Finished difference Result 98758 states and 140756 transitions. [2022-12-13 16:26:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:26:50,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2022-12-13 16:26:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:26:50,640 INFO L225 Difference]: With dead ends: 98758 [2022-12-13 16:26:50,640 INFO L226 Difference]: Without dead ends: 50532 [2022-12-13 16:26:50,665 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 16:26:50,666 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 53 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3154 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 16:26:50,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:26:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50532 states. [2022-12-13 16:26:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50532 to 50530. [2022-12-13 16:26:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50530 states, 50528 states have (on average 1.414859088030399) internal successors, (71490), 50529 states have internal predecessors, (71490), 0 states have call successors, (0), 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 16:26:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50530 states to 50530 states and 71490 transitions. [2022-12-13 16:26:58,873 INFO L78 Accepts]: Start accepts. Automaton has 50530 states and 71490 transitions. Word has length 91 [2022-12-13 16:26:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:26:58,873 INFO L495 AbstractCegarLoop]: Abstraction has 50530 states and 71490 transitions. [2022-12-13 16:26:58,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 16:26:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 50530 states and 71490 transitions. [2022-12-13 16:26:58,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 16:26:58,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:26:58,876 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] [2022-12-13 16:26:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:26:58,876 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:26:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1497819553, now seen corresponding path program 1 times [2022-12-13 16:26:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:26:58,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316431211] [2022-12-13 16:26:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:26:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:26:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:26:58,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316431211] [2022-12-13 16:26:58,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316431211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:58,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:58,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:26:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793018355] [2022-12-13 16:26:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:26:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:26:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:26:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:26:58,929 INFO L87 Difference]: Start difference. First operand 50530 states and 71490 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:27:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:02,108 INFO L93 Difference]: Finished difference Result 68315 states and 96714 transitions. [2022-12-13 16:27:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-12-13 16:27:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:02,129 INFO L225 Difference]: With dead ends: 68315 [2022-12-13 16:27:02,130 INFO L226 Difference]: Without dead ends: 20089 [2022-12-13 16:27:02,148 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 16:27:02,148 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 47 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 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 16:27:02,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 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 16:27:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2022-12-13 16:27:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 20081. [2022-12-13 16:27:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20081 states, 20079 states have (on average 1.423228248418746) internal successors, (28577), 20080 states have internal predecessors, (28577), 0 states have call successors, (0), 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 16:27:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 28577 transitions. [2022-12-13 16:27:05,242 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 28577 transitions. Word has length 92 [2022-12-13 16:27:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 20081 states and 28577 transitions. [2022-12-13 16:27:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 16:27:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 28577 transitions. [2022-12-13 16:27:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 16:27:05,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:05,244 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] [2022-12-13 16:27:05,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:27:05,244 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1217138981, now seen corresponding path program 1 times [2022-12-13 16:27:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:05,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214196108] [2022-12-13 16:27:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:05,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:05,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214196108] [2022-12-13 16:27:05,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214196108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:05,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:05,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:05,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23714250] [2022-12-13 16:27:05,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:05,324 INFO L87 Difference]: Start difference. First operand 20081 states and 28577 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 16:27:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:06,873 INFO L93 Difference]: Finished difference Result 28965 states and 41059 transitions. [2022-12-13 16:27:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2022-12-13 16:27:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:06,883 INFO L225 Difference]: With dead ends: 28965 [2022-12-13 16:27:06,883 INFO L226 Difference]: Without dead ends: 11203 [2022-12-13 16:27:06,891 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 16:27:06,891 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 49 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3130 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 16:27:06,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3130 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:27:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2022-12-13 16:27:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 11201. [2022-12-13 16:27:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11201 states, 11199 states have (on average 1.426645236181802) internal successors, (15977), 11200 states have internal predecessors, (15977), 0 states have call successors, (0), 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 16:27:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11201 states to 11201 states and 15977 transitions. [2022-12-13 16:27:08,427 INFO L78 Accepts]: Start accepts. Automaton has 11201 states and 15977 transitions. Word has length 93 [2022-12-13 16:27:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:08,427 INFO L495 AbstractCegarLoop]: Abstraction has 11201 states and 15977 transitions. [2022-12-13 16:27:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 16:27:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 11201 states and 15977 transitions. [2022-12-13 16:27:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 16:27:08,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:08,428 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] [2022-12-13 16:27:08,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:27:08,428 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1583020521, now seen corresponding path program 1 times [2022-12-13 16:27:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434498096] [2022-12-13 16:27:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:08,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434498096] [2022-12-13 16:27:08,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434498096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:08,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:08,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:08,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341646605] [2022-12-13 16:27:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:08,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:08,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:08,497 INFO L87 Difference]: Start difference. First operand 11201 states and 15977 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 16:27:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:09,282 INFO L93 Difference]: Finished difference Result 15645 states and 22159 transitions. [2022-12-13 16:27:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 95 [2022-12-13 16:27:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:09,288 INFO L225 Difference]: With dead ends: 15645 [2022-12-13 16:27:09,288 INFO L226 Difference]: Without dead ends: 6763 [2022-12-13 16:27:09,292 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 16:27:09,293 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 46 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3115 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 16:27:09,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3115 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:27:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-12-13 16:27:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6761. [2022-12-13 16:27:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6759 states have (on average 1.4405977215564432) internal successors, (9737), 6760 states have internal predecessors, (9737), 0 states have call successors, (0), 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 16:27:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 9737 transitions. [2022-12-13 16:27:10,098 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 9737 transitions. Word has length 95 [2022-12-13 16:27:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:10,098 INFO L495 AbstractCegarLoop]: Abstraction has 6761 states and 9737 transitions. [2022-12-13 16:27:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 16:27:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 9737 transitions. [2022-12-13 16:27:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 16:27:10,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:10,099 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] [2022-12-13 16:27:10,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:27:10,100 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1669627511, now seen corresponding path program 1 times [2022-12-13 16:27:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:10,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536397651] [2022-12-13 16:27:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:10,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536397651] [2022-12-13 16:27:10,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536397651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:10,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:10,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695870819] [2022-12-13 16:27:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:10,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:10,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:10,154 INFO L87 Difference]: Start difference. First operand 6761 states and 9737 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 16:27:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:10,555 INFO L93 Difference]: Finished difference Result 8985 states and 12799 transitions. [2022-12-13 16:27:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:10,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 97 [2022-12-13 16:27:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:10,559 INFO L225 Difference]: With dead ends: 8985 [2022-12-13 16:27:10,559 INFO L226 Difference]: Without dead ends: 4543 [2022-12-13 16:27:10,561 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 16:27:10,562 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 43 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3100 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 16:27:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3100 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:27:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2022-12-13 16:27:10,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4541. [2022-12-13 16:27:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4539 states have (on average 1.4644194756554307) internal successors, (6647), 4540 states have internal predecessors, (6647), 0 states have call successors, (0), 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 16:27:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6647 transitions. [2022-12-13 16:27:10,962 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6647 transitions. Word has length 97 [2022-12-13 16:27:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 6647 transitions. [2022-12-13 16:27:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 16:27:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6647 transitions. [2022-12-13 16:27:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 16:27:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:10,963 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] [2022-12-13 16:27:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:27:10,963 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 55223163, now seen corresponding path program 1 times [2022-12-13 16:27:10,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:10,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44172617] [2022-12-13 16:27:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44172617] [2022-12-13 16:27:11,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44172617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:27:11,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:27:11,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:27:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078615353] [2022-12-13 16:27:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:27:11,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:27:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:27:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:27:11,015 INFO L87 Difference]: Start difference. First operand 4541 states and 6647 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 16:27:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:11,242 INFO L93 Difference]: Finished difference Result 5655 states and 8164 transitions. [2022-12-13 16:27:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:27:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 16:27:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:11,245 INFO L225 Difference]: With dead ends: 5655 [2022-12-13 16:27:11,245 INFO L226 Difference]: Without dead ends: 3433 [2022-12-13 16:27:11,246 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 16:27:11,247 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 40 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3085 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 16:27:11,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3085 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:27:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2022-12-13 16:27:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3431. [2022-12-13 16:27:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3429 states have (on average 1.4922717993584136) internal successors, (5117), 3430 states have internal predecessors, (5117), 0 states have call successors, (0), 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 16:27:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5117 transitions. [2022-12-13 16:27:11,464 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5117 transitions. Word has length 99 [2022-12-13 16:27:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:11,464 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 5117 transitions. [2022-12-13 16:27:11,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 16:27:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5117 transitions. [2022-12-13 16:27:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 16:27:11,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:11,465 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] [2022-12-13 16:27:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:27:11,465 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:11,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2142604269, now seen corresponding path program 1 times [2022-12-13 16:27:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:11,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398811411] [2022-12-13 16:27:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:12,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398811411] [2022-12-13 16:27:12,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398811411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402980758] [2022-12-13 16:27:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:12,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:27:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:12,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:27:12,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:27:12,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:27:13,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402980758] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:13,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:13,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-12-13 16:27:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733212544] [2022-12-13 16:27:13,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:13,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 16:27:13,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 16:27:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:27:13,131 INFO L87 Difference]: Start difference. First operand 3431 states and 5117 transitions. Second operand has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 19 states have internal predecessors, (286), 0 states have call successors, (0), 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 16:27:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:19,269 INFO L93 Difference]: Finished difference Result 10421 states and 14398 transitions. [2022-12-13 16:27:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 16:27:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 19 states have internal predecessors, (286), 0 states have call successors, (0), 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 101 [2022-12-13 16:27:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:19,276 INFO L225 Difference]: With dead ends: 10421 [2022-12-13 16:27:19,276 INFO L226 Difference]: Without dead ends: 9309 [2022-12-13 16:27:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2022-12-13 16:27:19,279 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 17498 mSDsluCounter, 6667 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17498 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:27:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17498 Valid, 8196 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:27:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9309 states. [2022-12-13 16:27:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9309 to 7351. [2022-12-13 16:27:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7349 states have (on average 1.3793713430398693) internal successors, (10137), 7350 states have internal predecessors, (10137), 0 states have call successors, (0), 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 16:27:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10137 transitions. [2022-12-13 16:27:20,460 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10137 transitions. Word has length 101 [2022-12-13 16:27:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:20,460 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 10137 transitions. [2022-12-13 16:27:20,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.052631578947368) internal successors, (286), 19 states have internal predecessors, (286), 0 states have call successors, (0), 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 16:27:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10137 transitions. [2022-12-13 16:27:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 16:27:20,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:20,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:27:20,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:27:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 16:27:20,663 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1849602775, now seen corresponding path program 1 times [2022-12-13 16:27:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:20,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505760752] [2022-12-13 16:27:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:21,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505760752] [2022-12-13 16:27:21,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505760752] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328731296] [2022-12-13 16:27:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:21,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:21,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:21,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:21,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:27:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:27:21,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:22,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:23,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328731296] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:23,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:23,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-12-13 16:27:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22941615] [2022-12-13 16:27:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:23,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 16:27:23,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 16:27:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2022-12-13 16:27:23,183 INFO L87 Difference]: Start difference. First operand 7351 states and 10137 transitions. Second operand has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 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 16:27:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:27:27,595 INFO L93 Difference]: Finished difference Result 20278 states and 26474 transitions. [2022-12-13 16:27:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:27:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 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 102 [2022-12-13 16:27:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:27:27,607 INFO L225 Difference]: With dead ends: 20278 [2022-12-13 16:27:27,607 INFO L226 Difference]: Without dead ends: 15757 [2022-12-13 16:27:27,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=322, Invalid=1084, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 16:27:27,610 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 11116 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11116 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:27:27,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11116 Valid, 5056 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:27:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15757 states. [2022-12-13 16:27:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15757 to 12192. [2022-12-13 16:27:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 12190 states have (on average 1.3306808859721082) internal successors, (16221), 12191 states have internal predecessors, (16221), 0 states have call successors, (0), 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 16:27:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 16221 transitions. [2022-12-13 16:27:30,262 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 16221 transitions. Word has length 102 [2022-12-13 16:27:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:27:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 12192 states and 16221 transitions. [2022-12-13 16:27:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 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 16:27:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 16221 transitions. [2022-12-13 16:27:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 16:27:30,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:27:30,264 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:27:30,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:27:30,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 16:27:30,466 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:27:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:27:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 11365335, now seen corresponding path program 1 times [2022-12-13 16:27:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:27:30,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739465047] [2022-12-13 16:27:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:27:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:27:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739465047] [2022-12-13 16:27:31,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739465047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:27:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273928668] [2022-12-13 16:27:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:27:31,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:27:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:27:31,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:27:31,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:27:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:27:31,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 16:27:31,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:27:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:32,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:27:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:27:33,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273928668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:27:33,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:27:33,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2022-12-13 16:27:33,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370021177] [2022-12-13 16:27:33,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:27:33,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 16:27:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:27:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 16:27:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:27:33,626 INFO L87 Difference]: Start difference. First operand 12192 states and 16221 transitions. Second operand has 33 states, 33 states have (on average 8.787878787878787) internal successors, (290), 33 states have internal predecessors, (290), 0 states have call successors, (0), 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 16:28:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:02,049 INFO L93 Difference]: Finished difference Result 53984 states and 67150 transitions. [2022-12-13 16:28:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-12-13 16:28:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.787878787878787) internal successors, (290), 33 states have internal predecessors, (290), 0 states have call successors, (0), 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 102 [2022-12-13 16:28:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:02,091 INFO L225 Difference]: With dead ends: 53984 [2022-12-13 16:28:02,091 INFO L226 Difference]: Without dead ends: 46069 [2022-12-13 16:28:02,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4410 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2413, Invalid=11867, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 16:28:02,104 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 19148 mSDsluCounter, 16902 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19148 SdHoareTripleChecker+Valid, 18488 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:28:02,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19148 Valid, 18488 Invalid, 2296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:28:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46069 states. [2022-12-13 16:28:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46069 to 21448. [2022-12-13 16:28:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21448 states, 21446 states have (on average 1.3019677329105661) internal successors, (27922), 21447 states have internal predecessors, (27922), 0 states have call successors, (0), 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 16:28:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21448 states to 21448 states and 27922 transitions. [2022-12-13 16:28:08,522 INFO L78 Accepts]: Start accepts. Automaton has 21448 states and 27922 transitions. Word has length 102 [2022-12-13 16:28:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:28:08,522 INFO L495 AbstractCegarLoop]: Abstraction has 21448 states and 27922 transitions. [2022-12-13 16:28:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.787878787878787) internal successors, (290), 33 states have internal predecessors, (290), 0 states have call successors, (0), 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 16:28:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 21448 states and 27922 transitions. [2022-12-13 16:28:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:28:08,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:28:08,523 INFO L195 NwaCegarLoop]: trace histogram [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 16:28:08,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:28:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 16:28:08,725 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:28:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:28:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1841498471, now seen corresponding path program 1 times [2022-12-13 16:28:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:28:08,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348818913] [2022-12-13 16:28:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:28:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:28:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348818913] [2022-12-13 16:28:09,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348818913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:28:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114749744] [2022-12-13 16:28:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:28:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:28:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:28:09,655 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:28:09,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:28:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:28:09,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:28:09,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:28:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:10,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:28:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:28:10,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114749744] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:28:10,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:28:10,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-12-13 16:28:10,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504853124] [2022-12-13 16:28:10,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:28:10,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:28:10,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:28:10,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:28:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:28:10,970 INFO L87 Difference]: Start difference. First operand 21448 states and 27922 transitions. Second operand has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 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 16:28:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:28:44,643 INFO L93 Difference]: Finished difference Result 101648 states and 129123 transitions. [2022-12-13 16:28:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 16:28:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 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 103 [2022-12-13 16:28:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:28:44,727 INFO L225 Difference]: With dead ends: 101648 [2022-12-13 16:28:44,727 INFO L226 Difference]: Without dead ends: 84558 [2022-12-13 16:28:44,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=964, Invalid=3728, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 16:28:44,748 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 23836 mSDsluCounter, 7025 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23836 SdHoareTripleChecker+Valid, 8618 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:28:44,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23836 Valid, 8618 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 16:28:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84558 states. [2022-12-13 16:29:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84558 to 48740. [2022-12-13 16:29:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48740 states, 48738 states have (on average 1.2843776929705775) internal successors, (62598), 48739 states have internal predecessors, (62598), 0 states have call successors, (0), 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 16:29:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48740 states to 48740 states and 62598 transitions. [2022-12-13 16:29:01,453 INFO L78 Accepts]: Start accepts. Automaton has 48740 states and 62598 transitions. Word has length 103 [2022-12-13 16:29:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:29:01,453 INFO L495 AbstractCegarLoop]: Abstraction has 48740 states and 62598 transitions. [2022-12-13 16:29:01,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 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 16:29:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 48740 states and 62598 transitions. [2022-12-13 16:29:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:29:01,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:29:01,455 INFO L195 NwaCegarLoop]: trace histogram [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 16:29:01,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:29:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 16:29:01,657 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:29:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:29:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1523326361, now seen corresponding path program 1 times [2022-12-13 16:29:01,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:29:01,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114801411] [2022-12-13 16:29:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:29:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:29:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:29:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:29:02,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:29:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114801411] [2022-12-13 16:29:02,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114801411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:29:02,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563746573] [2022-12-13 16:29:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:29:02,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:29:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:29:02,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:29:02,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:29:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:29:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:29:03,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:29:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:29:03,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:29:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:29:04,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563746573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:29:04,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:29:04,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2022-12-13 16:29:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663406132] [2022-12-13 16:29:04,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:29:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 16:29:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:29:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 16:29:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 16:29:04,863 INFO L87 Difference]: Start difference. First operand 48740 states and 62598 transitions. Second operand has 33 states, 33 states have (on average 8.151515151515152) internal successors, (269), 33 states have internal predecessors, (269), 0 states have call successors, (0), 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 16:29:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:29:54,816 INFO L93 Difference]: Finished difference Result 145949 states and 185522 transitions. [2022-12-13 16:29:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-13 16:29:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.151515151515152) internal successors, (269), 33 states have internal predecessors, (269), 0 states have call successors, (0), 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 103 [2022-12-13 16:29:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:29:54,929 INFO L225 Difference]: With dead ends: 145949 [2022-12-13 16:29:54,929 INFO L226 Difference]: Without dead ends: 102079 [2022-12-13 16:29:54,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4242 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2238, Invalid=10872, Unknown=0, NotChecked=0, Total=13110 [2022-12-13 16:29:54,959 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 25255 mSDsluCounter, 13496 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25255 SdHoareTripleChecker+Valid, 15098 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:29:54,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25255 Valid, 15098 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 16:29:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102079 states. [2022-12-13 16:30:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102079 to 51692. [2022-12-13 16:30:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51692 states, 51690 states have (on average 1.282104855871542) internal successors, (66272), 51691 states have internal predecessors, (66272), 0 states have call successors, (0), 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 16:30:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51692 states to 51692 states and 66272 transitions. [2022-12-13 16:30:14,997 INFO L78 Accepts]: Start accepts. Automaton has 51692 states and 66272 transitions. Word has length 103 [2022-12-13 16:30:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:30:14,997 INFO L495 AbstractCegarLoop]: Abstraction has 51692 states and 66272 transitions. [2022-12-13 16:30:14,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.151515151515152) internal successors, (269), 33 states have internal predecessors, (269), 0 states have call successors, (0), 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 16:30:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 51692 states and 66272 transitions. [2022-12-13 16:30:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:30:14,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:30:14,999 INFO L195 NwaCegarLoop]: trace histogram [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 16:30:15,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:30:15,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:15,201 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:30:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:30:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash -454159001, now seen corresponding path program 1 times [2022-12-13 16:30:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:30:15,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947780056] [2022-12-13 16:30:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:30:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:30:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:30:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:30:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947780056] [2022-12-13 16:30:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947780056] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:30:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274287867] [2022-12-13 16:30:15,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:30:15,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:30:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:30:15,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:30:15,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:30:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:30:15,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 16:30:15,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:30:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:16,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:30:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:30:16,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274287867] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:30:16,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:30:16,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-13 16:30:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957611694] [2022-12-13 16:30:16,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:30:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 16:30:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:30:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 16:30:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-12-13 16:30:16,952 INFO L87 Difference]: Start difference. First operand 51692 states and 66272 transitions. Second operand has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 20 states have internal predecessors, (239), 0 states have call successors, (0), 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 16:30:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:30:55,031 INFO L93 Difference]: Finished difference Result 132000 states and 165889 transitions. [2022-12-13 16:30:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 16:30:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 20 states have internal predecessors, (239), 0 states have call successors, (0), 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 103 [2022-12-13 16:30:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:30:55,130 INFO L225 Difference]: With dead ends: 132000 [2022-12-13 16:30:55,130 INFO L226 Difference]: Without dead ends: 91204 [2022-12-13 16:30:55,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 16:30:55,156 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 17347 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17347 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:30:55,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17347 Valid, 5007 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:30:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91204 states. [2022-12-13 16:31:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91204 to 48116. [2022-12-13 16:31:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48116 states, 48114 states have (on average 1.268591262418423) internal successors, (61037), 48115 states have internal predecessors, (61037), 0 states have call successors, (0), 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 16:31:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48116 states to 48116 states and 61037 transitions. [2022-12-13 16:31:14,876 INFO L78 Accepts]: Start accepts. Automaton has 48116 states and 61037 transitions. Word has length 103 [2022-12-13 16:31:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:31:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 48116 states and 61037 transitions. [2022-12-13 16:31:14,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 20 states have internal predecessors, (239), 0 states have call successors, (0), 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 16:31:14,877 INFO L276 IsEmpty]: Start isEmpty. Operand 48116 states and 61037 transitions. [2022-12-13 16:31:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:31:14,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:31:14,878 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:31:14,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:31:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:31:15,080 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:31:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:31:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2014127583, now seen corresponding path program 1 times [2022-12-13 16:31:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:31:15,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635339534] [2022-12-13 16:31:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:31:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:31:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:31:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:31:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:31:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635339534] [2022-12-13 16:31:15,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635339534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:31:15,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774473788] [2022-12-13 16:31:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:31:15,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:31:15,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:31:15,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:31:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:31:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:31:15,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:31:15,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:31:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:31:16,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:31:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:31:17,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774473788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:31:17,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:31:17,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-12-13 16:31:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809525528] [2022-12-13 16:31:17,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:31:17,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:31:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:31:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:31:17,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:31:17,006 INFO L87 Difference]: Start difference. First operand 48116 states and 61037 transitions. Second operand has 28 states, 28 states have (on average 9.357142857142858) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:32:17,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:32:17,911 INFO L93 Difference]: Finished difference Result 179457 states and 225758 transitions. [2022-12-13 16:32:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 16:32:17,912 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.357142857142858) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:32:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:32:18,077 INFO L225 Difference]: With dead ends: 179457 [2022-12-13 16:32:18,078 INFO L226 Difference]: Without dead ends: 139427 [2022-12-13 16:32:18,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 16:32:18,115 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 12618 mSDsluCounter, 6773 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12618 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:32:18,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12618 Valid, 8337 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:32:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139427 states. [2022-12-13 16:32:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139427 to 94110. [2022-12-13 16:32:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94110 states, 94108 states have (on average 1.2497130955922982) internal successors, (117608), 94109 states have internal predecessors, (117608), 0 states have call successors, (0), 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 16:32:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94110 states to 94110 states and 117608 transitions. [2022-12-13 16:32:59,386 INFO L78 Accepts]: Start accepts. Automaton has 94110 states and 117608 transitions. Word has length 104 [2022-12-13 16:32:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:32:59,386 INFO L495 AbstractCegarLoop]: Abstraction has 94110 states and 117608 transitions. [2022-12-13 16:32:59,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.357142857142858) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 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 16:32:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 94110 states and 117608 transitions. [2022-12-13 16:32:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:32:59,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:32:59,388 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:32:59,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:32:59,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 16:32:59,590 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:32:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:32:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash -900097801, now seen corresponding path program 1 times [2022-12-13 16:32:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:32:59,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416000401] [2022-12-13 16:32:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:32:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:32:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:32:59,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:32:59,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416000401] [2022-12-13 16:32:59,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416000401] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:32:59,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637014660] [2022-12-13 16:32:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:32:59,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:32:59,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:32:59,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:32:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:32:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:32:59,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:32:59,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:33:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:00,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:33:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:01,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637014660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:33:01,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:33:01,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-12-13 16:33:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225082418] [2022-12-13 16:33:01,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:33:01,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:33:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:01,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:33:01,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:33:01,706 INFO L87 Difference]: Start difference. First operand 94110 states and 117608 transitions. Second operand has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 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 16:34:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:34:07,384 INFO L93 Difference]: Finished difference Result 213086 states and 264400 transitions. [2022-12-13 16:34:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 16:34:07,385 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 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 105 [2022-12-13 16:34:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:34:07,542 INFO L225 Difference]: With dead ends: 213086 [2022-12-13 16:34:07,543 INFO L226 Difference]: Without dead ends: 134482 [2022-12-13 16:34:07,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=518, Invalid=1552, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 16:34:07,591 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 12248 mSDsluCounter, 6620 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12248 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:34:07,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12248 Valid, 8178 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:34:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134482 states. [2022-12-13 16:34:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134482 to 91230. [2022-12-13 16:34:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91230 states, 91228 states have (on average 1.2398715306704082) internal successors, (113111), 91229 states have internal predecessors, (113111), 0 states have call successors, (0), 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 16:34:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91230 states to 91230 states and 113111 transitions. [2022-12-13 16:34:51,460 INFO L78 Accepts]: Start accepts. Automaton has 91230 states and 113111 transitions. Word has length 105 [2022-12-13 16:34:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:34:51,460 INFO L495 AbstractCegarLoop]: Abstraction has 91230 states and 113111 transitions. [2022-12-13 16:34:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.75) internal successors, (273), 28 states have internal predecessors, (273), 0 states have call successors, (0), 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 16:34:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 91230 states and 113111 transitions. [2022-12-13 16:34:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:34:51,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:34:51,463 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:34:51,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 16:34:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:34:51,664 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:34:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:34:51,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1134936465, now seen corresponding path program 1 times [2022-12-13 16:34:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:34:51,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184190437] [2022-12-13 16:34:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:34:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:34:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184190437] [2022-12-13 16:34:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184190437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:34:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811799424] [2022-12-13 16:34:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:34:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:34:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:34:52,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:34:52,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:34:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:34:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 16:34:52,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:34:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:53,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:34:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:34:55,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811799424] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:34:55,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:34:55,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 37 [2022-12-13 16:34:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99355327] [2022-12-13 16:34:55,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:34:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 16:34:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:34:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 16:34:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 16:34:55,843 INFO L87 Difference]: Start difference. First operand 91230 states and 113111 transitions. Second operand has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 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 16:36:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:36:54,857 INFO L93 Difference]: Finished difference Result 228428 states and 280016 transitions. [2022-12-13 16:36:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-12-13 16:36:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 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 16:36:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:36:55,084 INFO L225 Difference]: With dead ends: 228428 [2022-12-13 16:36:55,084 INFO L226 Difference]: Without dead ends: 189680 [2022-12-13 16:36:55,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 181 SyntacticMatches, 7 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5164 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3086, Invalid=12414, Unknown=0, NotChecked=0, Total=15500 [2022-12-13 16:36:55,139 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 15294 mSDsluCounter, 22343 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15294 SdHoareTripleChecker+Valid, 24024 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:36:55,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15294 Valid, 24024 Invalid, 3306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 16:36:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189680 states. [2022-12-13 16:37:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189680 to 79106. [2022-12-13 16:37:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79106 states, 79104 states have (on average 1.2373584142394822) internal successors, (97880), 79105 states have internal predecessors, (97880), 0 states have call successors, (0), 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 16:37:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79106 states to 79106 states and 97880 transitions. [2022-12-13 16:37:35,556 INFO L78 Accepts]: Start accepts. Automaton has 79106 states and 97880 transitions. Word has length 106 [2022-12-13 16:37:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:37:35,556 INFO L495 AbstractCegarLoop]: Abstraction has 79106 states and 97880 transitions. [2022-12-13 16:37:35,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 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 16:37:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 79106 states and 97880 transitions. [2022-12-13 16:37:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:37:35,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:37:35,558 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:37:35,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 16:37:35,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 16:37:35,759 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:37:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:37:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1618793617, now seen corresponding path program 1 times [2022-12-13 16:37:35,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:37:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732091745] [2022-12-13 16:37:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:37:35,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:37:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:37:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:36,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:37:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732091745] [2022-12-13 16:37:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732091745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:37:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251094502] [2022-12-13 16:37:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:37:36,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:37:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:37:36,456 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:37:36,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_763f86e1-afcf-4512-b1de-3aeae8a80ea8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:37:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:37:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 16:37:36,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:37:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:38,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:37:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:37:41,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251094502] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:37:41,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:37:41,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 18] total 43 [2022-12-13 16:37:41,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748536720] [2022-12-13 16:37:41,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:37:41,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 16:37:41,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:37:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 16:37:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 16:37:41,536 INFO L87 Difference]: Start difference. First operand 79106 states and 97880 transitions. Second operand has 43 states, 43 states have (on average 5.906976744186046) internal successors, (254), 43 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)