./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/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_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/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_571f4072-942d-46ef-9a0f-a3a677edfb37/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 958ad7cbd67a25f08fdfb008e82df18bba1cce7737ba27f2fb1a13f2299466c1 --- 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 16:04:47,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:04:47,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:04:47,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:04:47,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:04:47,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:04:47,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:04:47,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:04:47,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:04:47,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:04:47,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:04:47,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:04:47,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:04:47,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:04:47,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:04:47,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:04:47,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:04:47,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:04:47,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:04:47,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:04:47,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:04:47,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:04:47,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:04:47,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:04:47,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:04:47,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:04:47,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:04:47,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:04:47,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:04:47,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:04:47,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:04:47,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:04:47,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:04:47,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:04:47,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:04:47,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:04:47,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:04:47,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:04:47,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:04:47,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:04:47,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:04:47,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:04:47,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:04:47,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:04:47,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:04:47,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:04:47,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:04:47,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:04:47,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:04:47,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:04:47,177 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:04:47,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:04:47,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:04:47,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:04:47,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:04:47,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:04:47,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:04:47,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:04:47,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:04:47,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:04:47,181 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:04:47,181 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_571f4072-942d-46ef-9a0f-a3a677edfb37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958ad7cbd67a25f08fdfb008e82df18bba1cce7737ba27f2fb1a13f2299466c1 [2022-12-13 16:04:47,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:04:47,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:04:47,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:04:47,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:04:47,387 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:04:47,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 16:04:49,898 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:04:50,092 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:04:50,093 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 16:04:50,103 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/data/5d1717abb/ad06bfbbecfd4d6891a5f2311427a644/FLAG125915071 [2022-12-13 16:04:50,469 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/data/5d1717abb/ad06bfbbecfd4d6891a5f2311427a644 [2022-12-13 16:04:50,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:04:50,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:04:50,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:04:50,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:04:50,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:04:50,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267efe1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50, skipping insertion in model container [2022-12-13 16:04:50,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:04:50,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:04:50,693 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_571f4072-942d-46ef-9a0f-a3a677edfb37/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2022-12-13 16:04:50,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:04:50,732 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:04:50,777 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_571f4072-942d-46ef-9a0f-a3a677edfb37/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2022-12-13 16:04:50,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:04:50,813 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:04:50,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50 WrapperNode [2022-12-13 16:04:50,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:04:50,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:04:50,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:04:50,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:04:50,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,856 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 635 [2022-12-13 16:04:50,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:04:50,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:04:50,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:04:50,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:04:50,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,879 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:04:50,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:04:50,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:04:50,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:04:50,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (1/1) ... [2022-12-13 16:04:50,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:04:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:50,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:04:50,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571f4072-942d-46ef-9a0f-a3a677edfb37/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:04:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:04:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:04:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:04:50,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:04:51,039 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:04:51,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:04:51,406 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:04:51,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:04:51,412 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 16:04:51,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:04:51 BoogieIcfgContainer [2022-12-13 16:04:51,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:04:51,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:04:51,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:04:51,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:04:51,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:04:50" (1/3) ... [2022-12-13 16:04:51,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9afab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:04:51, skipping insertion in model container [2022-12-13 16:04:51,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:04:50" (2/3) ... [2022-12-13 16:04:51,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9afab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:04:51, skipping insertion in model container [2022-12-13 16:04:51,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:04:51" (3/3) ... [2022-12-13 16:04:51,420 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-12-13 16:04:51,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:04:51,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:04:51,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:04:51,472 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;@55e071fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:04:51,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:04:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 160 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 16:04:51,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:51,483 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] [2022-12-13 16:04:51,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2022-12-13 16:04:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061113962] [2022-12-13 16:04:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:51,826 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 16:04:51,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061113962] [2022-12-13 16:04:51,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061113962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:51,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:51,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573398476] [2022-12-13 16:04:51,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:51,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:51,855 INFO L87 Difference]: Start difference. First operand has 161 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 160 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:51,937 INFO L93 Difference]: Finished difference Result 345 states and 551 transitions. [2022-12-13 16:04:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-12-13 16:04:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:51,947 INFO L225 Difference]: With dead ends: 345 [2022-12-13 16:04:51,947 INFO L226 Difference]: Without dead ends: 224 [2022-12-13 16:04:51,949 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 16:04:51,951 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 157 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:51,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 440 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-12-13 16:04:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-12-13 16:04:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5136363636363637) internal successors, (333), 220 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 333 transitions. [2022-12-13 16:04:51,990 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 333 transitions. Word has length 62 [2022-12-13 16:04:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:51,991 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 333 transitions. [2022-12-13 16:04:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 333 transitions. [2022-12-13 16:04:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-13 16:04:51,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:51,992 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] [2022-12-13 16:04:51,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:04:51,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:51,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2022-12-13 16:04:51,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:51,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017833370] [2022-12-13 16:04:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:51,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:52,087 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 16:04:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017833370] [2022-12-13 16:04:52,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017833370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:52,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:52,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:52,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563069297] [2022-12-13 16:04:52,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:52,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:52,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:52,091 INFO L87 Difference]: Start difference. First operand 221 states and 333 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:52,135 INFO L93 Difference]: Finished difference Result 533 states and 821 transitions. [2022-12-13 16:04:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-13 16:04:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:52,137 INFO L225 Difference]: With dead ends: 533 [2022-12-13 16:04:52,137 INFO L226 Difference]: Without dead ends: 369 [2022-12-13 16:04:52,138 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 16:04:52,139 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:52,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 414 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-12-13 16:04:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2022-12-13 16:04:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5274725274725274) internal successors, (556), 364 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 556 transitions. [2022-12-13 16:04:52,165 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 556 transitions. Word has length 64 [2022-12-13 16:04:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:52,166 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 556 transitions. [2022-12-13 16:04:52,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 556 transitions. [2022-12-13 16:04:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 16:04:52,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:52,167 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] [2022-12-13 16:04:52,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:04:52,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2022-12-13 16:04:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:52,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515418427] [2022-12-13 16:04:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:52,236 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 16:04:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515418427] [2022-12-13 16:04:52,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515418427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:52,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:52,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561063987] [2022-12-13 16:04:52,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:52,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:52,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:52,239 INFO L87 Difference]: Start difference. First operand 365 states and 556 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:52,288 INFO L93 Difference]: Finished difference Result 949 states and 1462 transitions. [2022-12-13 16:04:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 16:04:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:52,291 INFO L225 Difference]: With dead ends: 949 [2022-12-13 16:04:52,291 INFO L226 Difference]: Without dead ends: 641 [2022-12-13 16:04:52,292 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 16:04:52,293 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:52,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 415 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-12-13 16:04:52,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 635. [2022-12-13 16:04:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.526813880126183) internal successors, (968), 634 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 968 transitions. [2022-12-13 16:04:52,336 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 968 transitions. Word has length 66 [2022-12-13 16:04:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 968 transitions. [2022-12-13 16:04:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 968 transitions. [2022-12-13 16:04:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 16:04:52,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:52,338 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 16:04:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:04:52,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2022-12-13 16:04:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:52,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40763487] [2022-12-13 16:04:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:52,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:52,421 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 16:04:52,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:52,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40763487] [2022-12-13 16:04:52,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40763487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:52,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:52,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:04:52,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101167307] [2022-12-13 16:04:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:52,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:52,423 INFO L87 Difference]: Start difference. First operand 635 states and 968 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 16:04:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:52,685 INFO L93 Difference]: Finished difference Result 3261 states and 5058 transitions. [2022-12-13 16:04:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:04:52,685 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 16:04:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:52,691 INFO L225 Difference]: With dead ends: 3261 [2022-12-13 16:04:52,691 INFO L226 Difference]: Without dead ends: 2673 [2022-12-13 16:04:52,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:04:52,694 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 969 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:52,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1557 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:04:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2022-12-13 16:04:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 1171. [2022-12-13 16:04:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.5452991452991454) internal successors, (1808), 1170 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1808 transitions. [2022-12-13 16:04:52,774 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1808 transitions. Word has length 68 [2022-12-13 16:04:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:52,774 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1808 transitions. [2022-12-13 16:04:52,774 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 16:04:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1808 transitions. [2022-12-13 16:04:52,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 16:04:52,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:52,775 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 16:04:52,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:04:52,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:52,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2022-12-13 16:04:52,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:52,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256714491] [2022-12-13 16:04:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:52,838 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 16:04:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:52,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256714491] [2022-12-13 16:04:52,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256714491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:52,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:52,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:04:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744211203] [2022-12-13 16:04:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:52,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:04:52,839 INFO L87 Difference]: Start difference. First operand 1171 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 16:04:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:53,074 INFO L93 Difference]: Finished difference Result 4279 states and 6647 transitions. [2022-12-13 16:04:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:04:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 16:04:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:53,083 INFO L225 Difference]: With dead ends: 4279 [2022-12-13 16:04:53,083 INFO L226 Difference]: Without dead ends: 3165 [2022-12-13 16:04:53,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 16:04:53,085 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 432 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:53,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 777 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2022-12-13 16:04:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2156. [2022-12-13 16:04:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 1.5447795823665893) internal successors, (3329), 2155 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3329 transitions. [2022-12-13 16:04:53,207 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3329 transitions. Word has length 69 [2022-12-13 16:04:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:53,207 INFO L495 AbstractCegarLoop]: Abstraction has 2156 states and 3329 transitions. [2022-12-13 16:04:53,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 16:04:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3329 transitions. [2022-12-13 16:04:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 16:04:53,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:53,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:53,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:04:53,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2022-12-13 16:04:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940265330] [2022-12-13 16:04:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:53,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:53,249 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 16:04:53,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:53,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940265330] [2022-12-13 16:04:53,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940265330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:53,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:53,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654821798] [2022-12-13 16:04:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:53,251 INFO L87 Difference]: Start difference. First operand 2156 states and 3329 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:53,420 INFO L93 Difference]: Finished difference Result 5138 states and 7946 transitions. [2022-12-13 16:04:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-12-13 16:04:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:53,426 INFO L225 Difference]: With dead ends: 5138 [2022-12-13 16:04:53,426 INFO L226 Difference]: Without dead ends: 3039 [2022-12-13 16:04:53,428 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 16:04:53,429 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 130 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:53,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-12-13 16:04:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3037. [2022-12-13 16:04:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.539855072463768) internal successors, (4675), 3036 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4675 transitions. [2022-12-13 16:04:53,585 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4675 transitions. Word has length 72 [2022-12-13 16:04:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:53,586 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4675 transitions. [2022-12-13 16:04:53,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4675 transitions. [2022-12-13 16:04:53,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 16:04:53,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:53,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:53,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:04:53,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2022-12-13 16:04:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363467540] [2022-12-13 16:04:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:53,631 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 16:04:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:53,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363467540] [2022-12-13 16:04:53,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363467540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:53,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:53,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442774778] [2022-12-13 16:04:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:53,633 INFO L87 Difference]: Start difference. First operand 3037 states and 4675 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:53,857 INFO L93 Difference]: Finished difference Result 5871 states and 9045 transitions. [2022-12-13 16:04:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:53,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-12-13 16:04:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:53,866 INFO L225 Difference]: With dead ends: 5871 [2022-12-13 16:04:53,866 INFO L226 Difference]: Without dead ends: 4188 [2022-12-13 16:04:53,868 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 16:04:53,869 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 118 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:53,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2022-12-13 16:04:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 4186. [2022-12-13 16:04:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 1.5261648745519714) internal successors, (6387), 4185 states have internal predecessors, (6387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6387 transitions. [2022-12-13 16:04:54,112 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6387 transitions. Word has length 72 [2022-12-13 16:04:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:54,112 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 6387 transitions. [2022-12-13 16:04:54,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6387 transitions. [2022-12-13 16:04:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-13 16:04:54,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:54,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:54,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:04:54,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2022-12-13 16:04:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:54,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397709287] [2022-12-13 16:04:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:54,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:54,155 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 16:04:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:54,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397709287] [2022-12-13 16:04:54,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397709287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:54,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:54,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509436338] [2022-12-13 16:04:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:54,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:54,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:54,157 INFO L87 Difference]: Start difference. First operand 4186 states and 6387 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:54,483 INFO L93 Difference]: Finished difference Result 7892 states and 12047 transitions. [2022-12-13 16:04:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-12-13 16:04:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:54,496 INFO L225 Difference]: With dead ends: 7892 [2022-12-13 16:04:54,496 INFO L226 Difference]: Without dead ends: 5592 [2022-12-13 16:04:54,499 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 16:04:54,500 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 124 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:54,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2022-12-13 16:04:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5590. [2022-12-13 16:04:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5589 states have (on average 1.5097512971909106) internal successors, (8438), 5589 states have internal predecessors, (8438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 8438 transitions. [2022-12-13 16:04:54,878 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 8438 transitions. Word has length 72 [2022-12-13 16:04:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:54,878 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 8438 transitions. [2022-12-13 16:04:54,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 8438 transitions. [2022-12-13 16:04:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 16:04:54,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:54,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:54,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:04:54,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2071930450, now seen corresponding path program 1 times [2022-12-13 16:04:54,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:54,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198578372] [2022-12-13 16:04:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:54,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:55,059 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 16:04:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198578372] [2022-12-13 16:04:55,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198578372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:55,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:55,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:04:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083378895] [2022-12-13 16:04:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:55,061 INFO L87 Difference]: Start difference. First operand 5590 states and 8438 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:55,703 INFO L93 Difference]: Finished difference Result 9879 states and 14847 transitions. [2022-12-13 16:04:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:04:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 16:04:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:55,730 INFO L225 Difference]: With dead ends: 9879 [2022-12-13 16:04:55,730 INFO L226 Difference]: Without dead ends: 9877 [2022-12-13 16:04:55,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:04:55,733 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 278 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:55,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1069 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2022-12-13 16:04:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 5712. [2022-12-13 16:04:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5711 states have (on average 1.4941341271230957) internal successors, (8533), 5711 states have internal predecessors, (8533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 8533 transitions. [2022-12-13 16:04:56,184 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 8533 transitions. Word has length 77 [2022-12-13 16:04:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:56,184 INFO L495 AbstractCegarLoop]: Abstraction has 5712 states and 8533 transitions. [2022-12-13 16:04:56,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 8533 transitions. [2022-12-13 16:04:56,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:04:56,186 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:56,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:56,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:04:56,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash 555059603, now seen corresponding path program 1 times [2022-12-13 16:04:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:56,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085116225] [2022-12-13 16:04:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:04:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:56,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085116225] [2022-12-13 16:04:56,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085116225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:56,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:56,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:04:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554557281] [2022-12-13 16:04:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:56,280 INFO L87 Difference]: Start difference. First operand 5712 states and 8533 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:57,246 INFO L93 Difference]: Finished difference Result 16502 states and 24682 transitions. [2022-12-13 16:04:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:04:57,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 16:04:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:57,267 INFO L225 Difference]: With dead ends: 16502 [2022-12-13 16:04:57,267 INFO L226 Difference]: Without dead ends: 13566 [2022-12-13 16:04:57,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:04:57,272 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 543 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:57,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1027 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2022-12-13 16:04:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 9572. [2022-12-13 16:04:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9572 states, 9571 states have (on average 1.4903353881517083) internal successors, (14264), 9571 states have internal predecessors, (14264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9572 states to 9572 states and 14264 transitions. [2022-12-13 16:04:57,998 INFO L78 Accepts]: Start accepts. Automaton has 9572 states and 14264 transitions. Word has length 103 [2022-12-13 16:04:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:57,999 INFO L495 AbstractCegarLoop]: Abstraction has 9572 states and 14264 transitions. [2022-12-13 16:04:57,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9572 states and 14264 transitions. [2022-12-13 16:04:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:04:58,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:58,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:58,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:04:58,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash 773424495, now seen corresponding path program 1 times [2022-12-13 16:04:58,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:58,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793345799] [2022-12-13 16:04:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:58,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:04:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:58,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793345799] [2022-12-13 16:04:58,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793345799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:58,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:58,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:04:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197011390] [2022-12-13 16:04:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:04:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:04:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:58,091 INFO L87 Difference]: Start difference. First operand 9572 states and 14264 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:59,289 INFO L93 Difference]: Finished difference Result 19878 states and 29740 transitions. [2022-12-13 16:04:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:04:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:04:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:59,313 INFO L225 Difference]: With dead ends: 19878 [2022-12-13 16:04:59,314 INFO L226 Difference]: Without dead ends: 16090 [2022-12-13 16:04:59,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:04:59,320 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 554 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:59,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1015 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16090 states. [2022-12-13 16:05:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16090 to 13900. [2022-12-13 16:05:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13900 states, 13899 states have (on average 1.4888121447586158) internal successors, (20693), 13899 states have internal predecessors, (20693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13900 states to 13900 states and 20693 transitions. [2022-12-13 16:05:00,437 INFO L78 Accepts]: Start accepts. Automaton has 13900 states and 20693 transitions. Word has length 103 [2022-12-13 16:05:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:00,437 INFO L495 AbstractCegarLoop]: Abstraction has 13900 states and 20693 transitions. [2022-12-13 16:05:00,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13900 states and 20693 transitions. [2022-12-13 16:05:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 16:05:00,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:00,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:05:00,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009087, now seen corresponding path program 1 times [2022-12-13 16:05:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:00,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123484892] [2022-12-13 16:05:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:05:00,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123484892] [2022-12-13 16:05:00,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123484892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:00,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:00,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:05:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842650340] [2022-12-13 16:05:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:05:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:05:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:05:00,524 INFO L87 Difference]: Start difference. First operand 13900 states and 20693 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:01,864 INFO L93 Difference]: Finished difference Result 22030 states and 32941 transitions. [2022-12-13 16:05:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:05:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 16:05:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:01,886 INFO L225 Difference]: With dead ends: 22030 [2022-12-13 16:05:01,886 INFO L226 Difference]: Without dead ends: 18242 [2022-12-13 16:05:01,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:05:01,893 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 549 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:01,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1122 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:05:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2022-12-13 16:05:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 16716. [2022-12-13 16:05:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16716 states, 16715 states have (on average 1.4890816631767874) internal successors, (24890), 16715 states have internal predecessors, (24890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16716 states to 16716 states and 24890 transitions. [2022-12-13 16:05:03,288 INFO L78 Accepts]: Start accepts. Automaton has 16716 states and 24890 transitions. Word has length 103 [2022-12-13 16:05:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:03,288 INFO L495 AbstractCegarLoop]: Abstraction has 16716 states and 24890 transitions. [2022-12-13 16:05:03,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16716 states and 24890 transitions. [2022-12-13 16:05:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:05:03,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:03,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:03,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:05:03,290 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash -35525664, now seen corresponding path program 1 times [2022-12-13 16:05:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:03,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310236470] [2022-12-13 16:05:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:05:03,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:03,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310236470] [2022-12-13 16:05:03,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310236470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:03,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:03,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:05:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728044202] [2022-12-13 16:05:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:03,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:05:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:05:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:05:03,358 INFO L87 Difference]: Start difference. First operand 16716 states and 24890 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:05,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:05,237 INFO L93 Difference]: Finished difference Result 27607 states and 41280 transitions. [2022-12-13 16:05:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:05:05,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-12-13 16:05:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:05,262 INFO L225 Difference]: With dead ends: 27607 [2022-12-13 16:05:05,262 INFO L226 Difference]: Without dead ends: 22087 [2022-12-13 16:05:05,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:05:05,271 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 241 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:05,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 786 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:05:05,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22087 states. [2022-12-13 16:05:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22087 to 20433. [2022-12-13 16:05:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20432 states have (on average 1.4873238057948317) internal successors, (30389), 20432 states have internal predecessors, (30389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 30389 transitions. [2022-12-13 16:05:07,268 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 30389 transitions. Word has length 104 [2022-12-13 16:05:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:07,268 INFO L495 AbstractCegarLoop]: Abstraction has 20433 states and 30389 transitions. [2022-12-13 16:05:07,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 30389 transitions. [2022-12-13 16:05:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:05:07,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:07,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:07,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:05:07,271 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:07,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1812785472, now seen corresponding path program 1 times [2022-12-13 16:05:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:07,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738392241] [2022-12-13 16:05:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:05:07,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738392241] [2022-12-13 16:05:07,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738392241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:07,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:07,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236605574] [2022-12-13 16:05:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:07,328 INFO L87 Difference]: Start difference. First operand 20433 states and 30389 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:10,800 INFO L93 Difference]: Finished difference Result 46295 states and 68946 transitions. [2022-12-13 16:05:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:05:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-12-13 16:05:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:10,837 INFO L225 Difference]: With dead ends: 46295 [2022-12-13 16:05:10,837 INFO L226 Difference]: Without dead ends: 35423 [2022-12-13 16:05:10,848 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 16:05:10,849 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 109 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:10,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 410 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:05:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2022-12-13 16:05:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35354. [2022-12-13 16:05:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35354 states, 35353 states have (on average 1.4844567646310072) internal successors, (52480), 35353 states have internal predecessors, (52480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35354 states to 35354 states and 52480 transitions. [2022-12-13 16:05:13,589 INFO L78 Accepts]: Start accepts. Automaton has 35354 states and 52480 transitions. Word has length 104 [2022-12-13 16:05:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:13,589 INFO L495 AbstractCegarLoop]: Abstraction has 35354 states and 52480 transitions. [2022-12-13 16:05:13,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 35354 states and 52480 transitions. [2022-12-13 16:05:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:05:13,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:13,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:05:13,591 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1057251553, now seen corresponding path program 1 times [2022-12-13 16:05:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:13,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753445792] [2022-12-13 16:05:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:13,648 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 16:05:13,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:13,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753445792] [2022-12-13 16:05:13,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753445792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:13,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:13,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297173761] [2022-12-13 16:05:13,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:13,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:13,650 INFO L87 Difference]: Start difference. First operand 35354 states and 52480 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:19,691 INFO L93 Difference]: Finished difference Result 103633 states and 153479 transitions. [2022-12-13 16:05:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:05:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-12-13 16:05:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:19,778 INFO L225 Difference]: With dead ends: 103633 [2022-12-13 16:05:19,778 INFO L226 Difference]: Without dead ends: 68370 [2022-12-13 16:05:19,807 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 16:05:19,807 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 170 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:19,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 545 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:05:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68370 states. [2022-12-13 16:05:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68370 to 68368. [2022-12-13 16:05:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68368 states, 68367 states have (on average 1.469568651542411) internal successors, (100470), 68367 states have internal predecessors, (100470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68368 states to 68368 states and 100470 transitions. [2022-12-13 16:05:25,797 INFO L78 Accepts]: Start accepts. Automaton has 68368 states and 100470 transitions. Word has length 105 [2022-12-13 16:05:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:25,797 INFO L495 AbstractCegarLoop]: Abstraction has 68368 states and 100470 transitions. [2022-12-13 16:05:25,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 68368 states and 100470 transitions. [2022-12-13 16:05:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:05:25,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:25,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:05:25,800 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:25,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash 735650069, now seen corresponding path program 1 times [2022-12-13 16:05:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:25,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329267361] [2022-12-13 16:05:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:25,860 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 16:05:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329267361] [2022-12-13 16:05:25,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329267361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:25,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:25,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666905191] [2022-12-13 16:05:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:25,862 INFO L87 Difference]: Start difference. First operand 68368 states and 100470 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:37,990 INFO L93 Difference]: Finished difference Result 200274 states and 293530 transitions. [2022-12-13 16:05:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:05:37,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-12-13 16:05:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:38,176 INFO L225 Difference]: With dead ends: 200274 [2022-12-13 16:05:38,176 INFO L226 Difference]: Without dead ends: 132047 [2022-12-13 16:05:38,228 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 16:05:38,228 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 151 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:38,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 508 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:05:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132047 states. [2022-12-13 16:05:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132047 to 132045. [2022-12-13 16:05:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132045 states, 132044 states have (on average 1.4535836539335374) internal successors, (191937), 132044 states have internal predecessors, (191937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132045 states to 132045 states and 191937 transitions. [2022-12-13 16:05:50,329 INFO L78 Accepts]: Start accepts. Automaton has 132045 states and 191937 transitions. Word has length 105 [2022-12-13 16:05:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:50,329 INFO L495 AbstractCegarLoop]: Abstraction has 132045 states and 191937 transitions. [2022-12-13 16:05:50,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 132045 states and 191937 transitions. [2022-12-13 16:05:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:05:50,333 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:50,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:50,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:05:50,333 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -445027353, now seen corresponding path program 1 times [2022-12-13 16:05:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:50,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207761916] [2022-12-13 16:05:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 16:05:50,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:50,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207761916] [2022-12-13 16:05:50,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207761916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:50,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:50,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649376280] [2022-12-13 16:05:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:50,375 INFO L87 Difference]: Start difference. First operand 132045 states and 191937 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 16:06:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:06:07,995 INFO L93 Difference]: Finished difference Result 313795 states and 458157 transitions. [2022-12-13 16:06:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:06:07,996 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 106 [2022-12-13 16:06:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:06:08,276 INFO L225 Difference]: With dead ends: 313795 [2022-12-13 16:06:08,277 INFO L226 Difference]: Without dead ends: 182025 [2022-12-13 16:06:08,349 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 16:06:08,349 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 132 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:06:08,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:06:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182025 states. [2022-12-13 16:06:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182025 to 175163. [2022-12-13 16:06:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175163 states, 175162 states have (on average 1.440386613534899) internal successors, (252301), 175162 states have internal predecessors, (252301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:06:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175163 states to 175163 states and 252301 transitions. [2022-12-13 16:06:26,451 INFO L78 Accepts]: Start accepts. Automaton has 175163 states and 252301 transitions. Word has length 106 [2022-12-13 16:06:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:06:26,451 INFO L495 AbstractCegarLoop]: Abstraction has 175163 states and 252301 transitions. [2022-12-13 16:06:26,451 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 16:06:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 175163 states and 252301 transitions. [2022-12-13 16:06:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:06:26,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:06:26,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:26,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:06:26,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:06:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1751778651, now seen corresponding path program 1 times [2022-12-13 16:06:26,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:26,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806123278] [2022-12-13 16:06:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:26,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 16:06:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:26,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806123278] [2022-12-13 16:06:26,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806123278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:06:26,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:06:26,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:06:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619280192] [2022-12-13 16:06:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:06:26,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:06:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:06:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:06:26,494 INFO L87 Difference]: Start difference. First operand 175163 states and 252301 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:06:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:06:50,057 INFO L93 Difference]: Finished difference Result 415743 states and 601575 transitions. [2022-12-13 16:06:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:06:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-12-13 16:06:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:06:50,481 INFO L225 Difference]: With dead ends: 415743 [2022-12-13 16:06:50,481 INFO L226 Difference]: Without dead ends: 240879 [2022-12-13 16:06:50,592 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 16:06:50,593 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 126 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:06:50,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:06:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240879 states. [2022-12-13 16:07:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240879 to 231581. [2022-12-13 16:07:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231581 states, 231580 states have (on average 1.4261291994127299) internal successors, (330263), 231580 states have internal predecessors, (330263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231581 states to 231581 states and 330263 transitions. [2022-12-13 16:07:13,851 INFO L78 Accepts]: Start accepts. Automaton has 231581 states and 330263 transitions. Word has length 106 [2022-12-13 16:07:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:13,851 INFO L495 AbstractCegarLoop]: Abstraction has 231581 states and 330263 transitions. [2022-12-13 16:07:13,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 231581 states and 330263 transitions. [2022-12-13 16:07:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:07:13,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:13,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:07:13,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1921268000, now seen corresponding path program 1 times [2022-12-13 16:07:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:13,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321154489] [2022-12-13 16:07:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321154489] [2022-12-13 16:07:13,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321154489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:13,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:13,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:07:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784519708] [2022-12-13 16:07:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:13,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:13,928 INFO L87 Difference]: Start difference. First operand 231581 states and 330263 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:07:33,046 INFO L93 Difference]: Finished difference Result 410409 states and 586173 transitions. [2022-12-13 16:07:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-12-13 16:07:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:07:33,336 INFO L225 Difference]: With dead ends: 410409 [2022-12-13 16:07:33,336 INFO L226 Difference]: Without dead ends: 179127 [2022-12-13 16:07:33,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:33,458 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 95 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:07:33,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 478 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:07:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179127 states. [2022-12-13 16:07:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179127 to 128683. [2022-12-13 16:07:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128683 states, 128682 states have (on average 1.4362148552245069) internal successors, (184815), 128682 states have internal predecessors, (184815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128683 states to 128683 states and 184815 transitions. [2022-12-13 16:07:47,872 INFO L78 Accepts]: Start accepts. Automaton has 128683 states and 184815 transitions. Word has length 107 [2022-12-13 16:07:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:47,872 INFO L495 AbstractCegarLoop]: Abstraction has 128683 states and 184815 transitions. [2022-12-13 16:07:47,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 128683 states and 184815 transitions. [2022-12-13 16:07:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:07:47,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:47,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:07:47,875 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash -385165582, now seen corresponding path program 1 times [2022-12-13 16:07:47,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:47,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361691193] [2022-12-13 16:07:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:47,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361691193] [2022-12-13 16:07:47,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361691193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:47,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:47,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:07:47,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398767177] [2022-12-13 16:07:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:47,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:47,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:47,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:47,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:47,937 INFO L87 Difference]: Start difference. First operand 128683 states and 184815 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:07:53,656 INFO L93 Difference]: Finished difference Result 176879 states and 254501 transitions. [2022-12-13 16:07:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:53,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-12-13 16:07:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:07:53,715 INFO L225 Difference]: With dead ends: 176879 [2022-12-13 16:07:53,715 INFO L226 Difference]: Without dead ends: 48769 [2022-12-13 16:07:53,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:53,782 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 67 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:07:53,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:07:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48769 states. [2022-12-13 16:07:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48769 to 35467. [2022-12-13 16:07:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35467 states, 35466 states have (on average 1.4447358033045734) internal successors, (51239), 35466 states have internal predecessors, (51239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35467 states to 35467 states and 51239 transitions. [2022-12-13 16:07:57,869 INFO L78 Accepts]: Start accepts. Automaton has 35467 states and 51239 transitions. Word has length 107 [2022-12-13 16:07:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:57,869 INFO L495 AbstractCegarLoop]: Abstraction has 35467 states and 51239 transitions. [2022-12-13 16:07:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:07:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 35467 states and 51239 transitions. [2022-12-13 16:07:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:07:57,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:57,871 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:07:57,871 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1766962226, now seen corresponding path program 1 times [2022-12-13 16:07:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304919495] [2022-12-13 16:07:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:58,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304919495] [2022-12-13 16:07:58,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304919495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:58,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:07:58,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:07:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673858552] [2022-12-13 16:07:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:58,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:58,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:07:58,084 INFO L87 Difference]: Start difference. First operand 35467 states and 51239 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:00,219 INFO L93 Difference]: Finished difference Result 52923 states and 76497 transitions. [2022-12-13 16:08:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-12-13 16:08:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:00,239 INFO L225 Difference]: With dead ends: 52923 [2022-12-13 16:08:00,239 INFO L226 Difference]: Without dead ends: 18185 [2022-12-13 16:08:00,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:00,263 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 63 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:00,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 387 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18185 states. [2022-12-13 16:08:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18185 to 18183. [2022-12-13 16:08:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18183 states, 18182 states have (on average 1.4281707182928172) internal successors, (25967), 18182 states have internal predecessors, (25967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 25967 transitions. [2022-12-13 16:08:02,402 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 25967 transitions. Word has length 107 [2022-12-13 16:08:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 18183 states and 25967 transitions. [2022-12-13 16:08:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 25967 transitions. [2022-12-13 16:08:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 16:08:02,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:02,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:08:02,404 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -738244030, now seen corresponding path program 1 times [2022-12-13 16:08:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:02,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357549897] [2022-12-13 16:08:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:08:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357549897] [2022-12-13 16:08:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357549897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:02,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:08:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804876336] [2022-12-13 16:08:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:08:02,508 INFO L87 Difference]: Start difference. First operand 18183 states and 25967 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:06,946 INFO L93 Difference]: Finished difference Result 53876 states and 76768 transitions. [2022-12-13 16:08:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:06,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-12-13 16:08:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:06,986 INFO L225 Difference]: With dead ends: 53876 [2022-12-13 16:08:06,986 INFO L226 Difference]: Without dead ends: 35702 [2022-12-13 16:08:07,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:08:07,006 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 457 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:07,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 549 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35702 states. [2022-12-13 16:08:11,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35702 to 35700. [2022-12-13 16:08:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35700 states, 35699 states have (on average 1.4165102663940166) internal successors, (50568), 35699 states have internal predecessors, (50568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35700 states to 35700 states and 50568 transitions. [2022-12-13 16:08:11,589 INFO L78 Accepts]: Start accepts. Automaton has 35700 states and 50568 transitions. Word has length 110 [2022-12-13 16:08:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:11,589 INFO L495 AbstractCegarLoop]: Abstraction has 35700 states and 50568 transitions. [2022-12-13 16:08:11,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35700 states and 50568 transitions. [2022-12-13 16:08:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:08:11,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:11,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:11,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:08:11,592 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash -11180042, now seen corresponding path program 1 times [2022-12-13 16:08:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:11,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633945365] [2022-12-13 16:08:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:08:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:11,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633945365] [2022-12-13 16:08:11,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633945365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:11,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:11,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680819886] [2022-12-13 16:08:11,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:11,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:11,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:11,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:11,622 INFO L87 Difference]: Start difference. First operand 35700 states and 50568 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:20,976 INFO L93 Difference]: Finished difference Result 107042 states and 151610 transitions. [2022-12-13 16:08:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-13 16:08:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:21,066 INFO L225 Difference]: With dead ends: 107042 [2022-12-13 16:08:21,066 INFO L226 Difference]: Without dead ends: 71390 [2022-12-13 16:08:21,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:21,097 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 214 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:21,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 652 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71390 states. [2022-12-13 16:08:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71390 to 35702. [2022-12-13 16:08:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35702 states, 35701 states have (on average 1.4164869331391277) internal successors, (50570), 35701 states have internal predecessors, (50570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35702 states to 35702 states and 50570 transitions. [2022-12-13 16:08:26,703 INFO L78 Accepts]: Start accepts. Automaton has 35702 states and 50570 transitions. Word has length 111 [2022-12-13 16:08:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:26,703 INFO L495 AbstractCegarLoop]: Abstraction has 35702 states and 50570 transitions. [2022-12-13 16:08:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 35702 states and 50570 transitions. [2022-12-13 16:08:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 16:08:26,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:26,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:08:26,706 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2146281569, now seen corresponding path program 1 times [2022-12-13 16:08:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72224405] [2022-12-13 16:08:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:08:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:26,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72224405] [2022-12-13 16:08:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72224405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:26,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:26,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:08:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641471590] [2022-12-13 16:08:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:26,763 INFO L87 Difference]: Start difference. First operand 35702 states and 50570 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:38,408 INFO L93 Difference]: Finished difference Result 103658 states and 146445 transitions. [2022-12-13 16:08:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 112 [2022-12-13 16:08:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:38,491 INFO L225 Difference]: With dead ends: 103658 [2022-12-13 16:08:38,492 INFO L226 Difference]: Without dead ends: 68614 [2022-12-13 16:08:38,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:38,514 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 155 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:38,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 633 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68614 states. [2022-12-13 16:08:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68614 to 68612. [2022-12-13 16:08:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68612 states, 68611 states have (on average 1.395592543469706) internal successors, (95753), 68611 states have internal predecessors, (95753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68612 states to 68612 states and 95753 transitions. [2022-12-13 16:08:48,929 INFO L78 Accepts]: Start accepts. Automaton has 68612 states and 95753 transitions. Word has length 112 [2022-12-13 16:08:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:48,929 INFO L495 AbstractCegarLoop]: Abstraction has 68612 states and 95753 transitions. [2022-12-13 16:08:48,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 68612 states and 95753 transitions. [2022-12-13 16:08:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 16:08:48,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:48,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:48,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:08:48,934 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -813466498, now seen corresponding path program 1 times [2022-12-13 16:08:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339548206] [2022-12-13 16:08:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:48,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:08:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339548206] [2022-12-13 16:08:49,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339548206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:49,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:49,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:08:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085711479] [2022-12-13 16:08:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:08:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:08:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:08:49,053 INFO L87 Difference]: Start difference. First operand 68612 states and 95753 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:09:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:10,011 INFO L93 Difference]: Finished difference Result 202626 states and 282142 transitions. [2022-12-13 16:09:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:09:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 112 [2022-12-13 16:09:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:10,191 INFO L225 Difference]: With dead ends: 202626 [2022-12-13 16:09:10,191 INFO L226 Difference]: Without dead ends: 134028 [2022-12-13 16:09:10,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:09:10,230 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 663 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:10,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 540 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:09:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134028 states. [2022-12-13 16:09:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134028 to 134026. [2022-12-13 16:09:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134026 states, 134025 states have (on average 1.3839806006342101) internal successors, (185488), 134025 states have internal predecessors, (185488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:09:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134026 states to 134026 states and 185488 transitions. [2022-12-13 16:09:31,655 INFO L78 Accepts]: Start accepts. Automaton has 134026 states and 185488 transitions. Word has length 112 [2022-12-13 16:09:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:09:31,655 INFO L495 AbstractCegarLoop]: Abstraction has 134026 states and 185488 transitions. [2022-12-13 16:09:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:09:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 134026 states and 185488 transitions. [2022-12-13 16:09:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 16:09:31,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:09:31,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:09:31,663 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:09:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -528620733, now seen corresponding path program 1 times [2022-12-13 16:09:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816767680] [2022-12-13 16:09:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:09:31,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:31,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816767680] [2022-12-13 16:09:31,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816767680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:09:31,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:09:31,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:09:31,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306191182] [2022-12-13 16:09:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:09:31,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:09:31,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:09:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:09:31,758 INFO L87 Difference]: Start difference. First operand 134026 states and 185488 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:09:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:09:54,640 INFO L93 Difference]: Finished difference Result 268224 states and 371142 transitions. [2022-12-13 16:09:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:09:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-12-13 16:09:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:09:54,837 INFO L225 Difference]: With dead ends: 268224 [2022-12-13 16:09:54,837 INFO L226 Difference]: Without dead ends: 134697 [2022-12-13 16:09:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:09:54,912 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 448 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:09:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 523 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:09:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134697 states. [2022-12-13 16:10:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134697 to 134695. [2022-12-13 16:10:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134695 states, 134694 states have (on average 1.3723848129835035) internal successors, (184852), 134694 states have internal predecessors, (184852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:10:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134695 states to 134695 states and 184852 transitions. [2022-12-13 16:10:17,399 INFO L78 Accepts]: Start accepts. Automaton has 134695 states and 184852 transitions. Word has length 112 [2022-12-13 16:10:17,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:10:17,399 INFO L495 AbstractCegarLoop]: Abstraction has 134695 states and 184852 transitions. [2022-12-13 16:10:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:10:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 134695 states and 184852 transitions. [2022-12-13 16:10:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:10:17,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:10:17,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:10:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:10:17,408 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:10:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:10:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1554116695, now seen corresponding path program 1 times [2022-12-13 16:10:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:10:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575634786] [2022-12-13 16:10:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:10:17,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:10:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:10:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:10:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:10:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575634786] [2022-12-13 16:10:17,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575634786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:10:17,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:10:17,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:10:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166964818] [2022-12-13 16:10:17,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:10:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:10:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:10:17,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:10:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:10:17,436 INFO L87 Difference]: Start difference. First operand 134695 states and 184852 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:11:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:03,078 INFO L93 Difference]: Finished difference Result 402750 states and 552910 transitions. [2022-12-13 16:11:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:11:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-12-13 16:11:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:03,508 INFO L225 Difference]: With dead ends: 402750 [2022-12-13 16:11:03,508 INFO L226 Difference]: Without dead ends: 269289 [2022-12-13 16:11:03,608 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 16:11:03,608 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 200 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:03,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 528 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:11:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269289 states. [2022-12-13 16:11:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269289 to 134705. [2022-12-13 16:11:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134705 states, 134704 states have (on average 1.3723571683097755) internal successors, (184862), 134704 states have internal predecessors, (184862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:11:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134705 states to 134705 states and 184862 transitions. [2022-12-13 16:11:29,187 INFO L78 Accepts]: Start accepts. Automaton has 134705 states and 184862 transitions. Word has length 113 [2022-12-13 16:11:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:29,187 INFO L495 AbstractCegarLoop]: Abstraction has 134705 states and 184862 transitions. [2022-12-13 16:11:29,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:11:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 134705 states and 184862 transitions. [2022-12-13 16:11:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 16:11:29,196 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:29,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 16:11:29,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2067468092, now seen corresponding path program 1 times [2022-12-13 16:11:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:29,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599949329] [2022-12-13 16:11:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:11:29,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:29,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599949329] [2022-12-13 16:11:29,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599949329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:29,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:29,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:11:29,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910209006] [2022-12-13 16:11:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:29,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:11:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:11:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:11:29,289 INFO L87 Difference]: Start difference. First operand 134705 states and 184862 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:11:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:51,894 INFO L93 Difference]: Finished difference Result 249620 states and 342692 transitions. [2022-12-13 16:11:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:11:51,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 114 [2022-12-13 16:11:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:52,075 INFO L225 Difference]: With dead ends: 249620 [2022-12-13 16:11:52,075 INFO L226 Difference]: Without dead ends: 114427 [2022-12-13 16:11:52,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:11:52,152 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 442 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:52,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 511 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:11:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114427 states. [2022-12-13 16:12:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114427 to 114425. [2022-12-13 16:12:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114425 states, 114424 states have (on average 1.3621006082640006) internal successors, (155857), 114424 states have internal predecessors, (155857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:12:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114425 states to 114425 states and 155857 transitions. [2022-12-13 16:12:14,662 INFO L78 Accepts]: Start accepts. Automaton has 114425 states and 155857 transitions. Word has length 114 [2022-12-13 16:12:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:12:14,662 INFO L495 AbstractCegarLoop]: Abstraction has 114425 states and 155857 transitions. [2022-12-13 16:12:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:12:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 114425 states and 155857 transitions. [2022-12-13 16:12:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:12:14,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:12:14,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:12:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:12:14,672 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:12:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:12:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1553581368, now seen corresponding path program 1 times [2022-12-13 16:12:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:12:14,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465879883] [2022-12-13 16:12:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:12:14,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:12:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:12:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:12:14,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465879883] [2022-12-13 16:12:14,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465879883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:12:14,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:12:14,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:12:14,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517825187] [2022-12-13 16:12:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:12:14,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:12:14,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:12:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:12:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:12:14,711 INFO L87 Difference]: Start difference. First operand 114425 states and 155857 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:12:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:12:59,757 INFO L93 Difference]: Finished difference Result 340217 states and 463927 transitions. [2022-12-13 16:12:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:12:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-12-13 16:12:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:13:00,122 INFO L225 Difference]: With dead ends: 340217 [2022-12-13 16:13:00,122 INFO L226 Difference]: Without dead ends: 227663 [2022-12-13 16:13:00,204 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 16:13:00,204 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 186 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:13:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 624 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:13:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227663 states. [2022-12-13 16:13:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227663 to 114445. [2022-12-13 16:13:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114445 states, 114444 states have (on average 1.3619499493201916) internal successors, (155867), 114444 states have internal predecessors, (155867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:13:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114445 states to 114445 states and 155867 transitions. [2022-12-13 16:13:25,235 INFO L78 Accepts]: Start accepts. Automaton has 114445 states and 155867 transitions. Word has length 115 [2022-12-13 16:13:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:13:25,235 INFO L495 AbstractCegarLoop]: Abstraction has 114445 states and 155867 transitions. [2022-12-13 16:13:25,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:13:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 114445 states and 155867 transitions. [2022-12-13 16:13:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 16:13:25,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:13:25,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 16:13:25,245 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:13:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1727181640, now seen corresponding path program 1 times [2022-12-13 16:13:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:25,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901849302] [2022-12-13 16:13:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:25,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901849302] [2022-12-13 16:13:25,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901849302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:25,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:13:25,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:13:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187812007] [2022-12-13 16:13:25,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:25,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:13:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:13:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:13:25,345 INFO L87 Difference]: Start difference. First operand 114445 states and 155867 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:13:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:13:50,029 INFO L93 Difference]: Finished difference Result 228621 states and 311413 transitions. [2022-12-13 16:13:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:13:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 116 [2022-12-13 16:13:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:13:50,194 INFO L225 Difference]: With dead ends: 228621 [2022-12-13 16:13:50,194 INFO L226 Difference]: Without dead ends: 115063 [2022-12-13 16:13:50,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:13:50,258 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 391 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:13:50,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 714 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:13:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115063 states. [2022-12-13 16:14:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115063 to 114481. [2022-12-13 16:14:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114481 states, 114480 states have (on average 1.3616264849755415) internal successors, (155879), 114480 states have internal predecessors, (155879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114481 states to 114481 states and 155879 transitions. [2022-12-13 16:14:15,020 INFO L78 Accepts]: Start accepts. Automaton has 114481 states and 155879 transitions. Word has length 116 [2022-12-13 16:14:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:14:15,021 INFO L495 AbstractCegarLoop]: Abstraction has 114481 states and 155879 transitions. [2022-12-13 16:14:15,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 114481 states and 155879 transitions. [2022-12-13 16:14:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 16:14:15,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:14:15,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:15,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 16:14:15,029 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:14:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash 794276549, now seen corresponding path program 1 times [2022-12-13 16:14:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609858587] [2022-12-13 16:14:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:14:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609858587] [2022-12-13 16:14:15,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609858587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:15,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:15,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:14:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089918916] [2022-12-13 16:14:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:15,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:14:15,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:14:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:14:15,164 INFO L87 Difference]: Start difference. First operand 114481 states and 155879 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:14:31,501 INFO L93 Difference]: Finished difference Result 187431 states and 255141 transitions. [2022-12-13 16:14:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:14:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-12-13 16:14:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:14:31,591 INFO L225 Difference]: With dead ends: 187431 [2022-12-13 16:14:31,592 INFO L226 Difference]: Without dead ends: 73222 [2022-12-13 16:14:31,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:14:31,647 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 65 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:14:31,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 703 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:14:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73222 states. [2022-12-13 16:14:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73222 to 73222. [2022-12-13 16:14:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73222 states, 73221 states have (on average 1.359760178090985) internal successors, (99563), 73221 states have internal predecessors, (99563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73222 states to 73222 states and 99563 transitions. [2022-12-13 16:14:47,814 INFO L78 Accepts]: Start accepts. Automaton has 73222 states and 99563 transitions. Word has length 116 [2022-12-13 16:14:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:14:47,814 INFO L495 AbstractCegarLoop]: Abstraction has 73222 states and 99563 transitions. [2022-12-13 16:14:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:14:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 73222 states and 99563 transitions. [2022-12-13 16:14:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 16:14:47,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:14:47,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:14:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 16:14:47,820 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:14:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:14:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2144620716, now seen corresponding path program 1 times [2022-12-13 16:14:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:14:47,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319796072] [2022-12-13 16:14:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:14:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:14:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:14:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:14:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:14:47,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319796072] [2022-12-13 16:14:47,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319796072] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:14:47,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:14:47,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:14:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366873731] [2022-12-13 16:14:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:14:47,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:14:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:14:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:14:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:14:47,852 INFO L87 Difference]: Start difference. First operand 73222 states and 99563 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:15:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:15:09,742 INFO L93 Difference]: Finished difference Result 165180 states and 224189 transitions. [2022-12-13 16:15:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:15:09,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 118 [2022-12-13 16:15:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:15:09,859 INFO L225 Difference]: With dead ends: 165180 [2022-12-13 16:15:09,860 INFO L226 Difference]: Without dead ends: 93390 [2022-12-13 16:15:09,905 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 16:15:09,905 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 96 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:15:09,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 427 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:15:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93390 states. [2022-12-13 16:15:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93390 to 73708. [2022-12-13 16:15:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73708 states, 73707 states have (on average 1.359016104304883) internal successors, (100169), 73707 states have internal predecessors, (100169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:15:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73708 states to 73708 states and 100169 transitions. [2022-12-13 16:15:27,921 INFO L78 Accepts]: Start accepts. Automaton has 73708 states and 100169 transitions. Word has length 118 [2022-12-13 16:15:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:15:27,921 INFO L495 AbstractCegarLoop]: Abstraction has 73708 states and 100169 transitions. [2022-12-13 16:15:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:15:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 73708 states and 100169 transitions. [2022-12-13 16:15:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 16:15:27,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:15:27,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:15:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 16:15:27,928 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:15:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:15:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1817814037, now seen corresponding path program 1 times [2022-12-13 16:15:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:15:27,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701174339] [2022-12-13 16:15:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:15:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:15:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 16:15:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:15:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701174339] [2022-12-13 16:15:27,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701174339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:15:27,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:15:27,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:15:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933199351] [2022-12-13 16:15:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:15:27,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:15:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:15:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:15:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:15:27,982 INFO L87 Difference]: Start difference. First operand 73708 states and 100169 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:16:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:16:01,263 INFO L93 Difference]: Finished difference Result 212310 states and 287926 transitions. [2022-12-13 16:16:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:16:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-12-13 16:16:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:16:01,463 INFO L225 Difference]: With dead ends: 212310 [2022-12-13 16:16:01,463 INFO L226 Difference]: Without dead ends: 140961 [2022-12-13 16:16:01,570 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 16:16:01,571 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 147 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:16:01,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 617 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:16:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140961 states. [2022-12-13 16:16:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140961 to 140959. [2022-12-13 16:16:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140959 states, 140958 states have (on average 1.3371571673831921) internal successors, (188483), 140958 states have internal predecessors, (188483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:16:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140959 states to 140959 states and 188483 transitions. [2022-12-13 16:16:36,593 INFO L78 Accepts]: Start accepts. Automaton has 140959 states and 188483 transitions. Word has length 121 [2022-12-13 16:16:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:16:36,593 INFO L495 AbstractCegarLoop]: Abstraction has 140959 states and 188483 transitions. [2022-12-13 16:16:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:16:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 140959 states and 188483 transitions. [2022-12-13 16:16:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 16:16:36,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:16:36,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:16:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 16:16:36,603 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:16:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:16:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1071899346, now seen corresponding path program 1 times [2022-12-13 16:16:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:16:36,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970826739] [2022-12-13 16:16:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:16:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:16:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:16:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:16:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:16:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970826739] [2022-12-13 16:16:36,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970826739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:16:36,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:16:36,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:16:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517932933] [2022-12-13 16:16:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:16:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:16:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:16:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:16:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:16:36,700 INFO L87 Difference]: Start difference. First operand 140959 states and 188483 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)