./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/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 b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 --- 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 16:11:01,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:11:01,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:11:01,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:11:01,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:11:01,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:11:01,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:11:01,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:11:01,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:11:01,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:11:01,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:11:01,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:11:01,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:11:01,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:11:01,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:11:01,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:11:01,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:11:01,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:11:01,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:11:01,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:11:01,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:11:01,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:11:01,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:11:01,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:11:01,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:11:01,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:11:01,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:11:01,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:11:01,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:11:01,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:11:01,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:11:01,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:11:01,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:11:01,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:11:01,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:11:01,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:11:01,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:11:01,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:11:01,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:11:01,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:11:01,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:11:01,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:11:01,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:11:01,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:11:01,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:11:01,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:11:01,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:11:01,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:11:01,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:11:01,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:11:01,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:11:01,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:11:01,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:11:01,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:11:01,277 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:11:01,277 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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 [2022-12-13 16:11:01,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:11:01,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:11:01,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:11:01,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:11:01,509 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:11:01,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-12-13 16:11:04,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:11:04,489 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:11:04,489 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2022-12-13 16:11:04,523 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/data/7a707b431/f4a81523f6b647959c73baf6f4650018/FLAG11bb3db42 [2022-12-13 16:11:04,535 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/data/7a707b431/f4a81523f6b647959c73baf6f4650018 [2022-12-13 16:11:04,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:11:04,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:11:04,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:11:04,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:11:04,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:11:04,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:11:04" (1/1) ... [2022-12-13 16:11:04,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3b4387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:04, skipping insertion in model container [2022-12-13 16:11:04,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:11:04" (1/1) ... [2022-12-13 16:11:04,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:11:04,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:11:06,053 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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-12-13 16:11:06,079 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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-12-13 16:11:06,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:11:06,234 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:11:07,007 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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2022-12-13 16:11:07,014 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_3c80e7b4-dc80-449e-bfa3-0c6b757df731/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2022-12-13 16:11:07,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:11:07,115 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:11:07,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07 WrapperNode [2022-12-13 16:11:07,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:11:07,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:11:07,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:11:07,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:11:07,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,478 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-12-13 16:11:07,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:11:07,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:11:07,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:11:07,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:11:07,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:11:07,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:11:07,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:11:07,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:11:07,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (1/1) ... [2022-12-13 16:11:07,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:11:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:11:07,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:11:07,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 16:11:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 16:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 16:11:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 16:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 16:11:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 16:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 16:11:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 16:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 16:11:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 16:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 16:11:07,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 16:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:11:07,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:11:07,946 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:11:07,948 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:11:13,632 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:11:13,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:11:13,669 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 16:11:13,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:11:13 BoogieIcfgContainer [2022-12-13 16:11:13,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:11:13,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:11:13,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:11:13,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:11:13,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:11:04" (1/3) ... [2022-12-13 16:11:13,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55269c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:11:13, skipping insertion in model container [2022-12-13 16:11:13,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:11:07" (2/3) ... [2022-12-13 16:11:13,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55269c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:11:13, skipping insertion in model container [2022-12-13 16:11:13,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:11:13" (3/3) ... [2022-12-13 16:11:13,678 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.c [2022-12-13 16:11:13,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:11:13,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 16:11:13,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:11:13,794 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;@6482d8cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:11:13,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 16:11:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 16:11:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:13,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:13,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:13,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-12-13 16:11:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:13,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111857747] [2022-12-13 16:11:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:13,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:14,139 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 16:11:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111857747] [2022-12-13 16:11:14,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111857747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:14,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:14,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:11:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337756947] [2022-12-13 16:11:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:11:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:11:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:11:14,172 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:14,960 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-12-13 16:11:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:11:14,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:15,012 INFO L225 Difference]: With dead ends: 4778 [2022-12-13 16:11:15,012 INFO L226 Difference]: Without dead ends: 2352 [2022-12-13 16:11:15,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:11:15,023 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 438 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 16451 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:15,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 16451 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 16:11:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-12-13 16:11:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-12-13 16:11:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 16:11:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-12-13 16:11:15,155 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-12-13 16:11:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:15,155 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-12-13 16:11:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-12-13 16:11:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:15,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:15,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:11:15,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-12-13 16:11:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:15,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978600645] [2022-12-13 16:11:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:15,370 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 16:11:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:15,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978600645] [2022-12-13 16:11:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978600645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:15,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:15,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:11:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024882115] [2022-12-13 16:11:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:15,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:11:15,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:11:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:11:15,374 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:16,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:16,439 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-12-13 16:11:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:11:16,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:16,447 INFO L225 Difference]: With dead ends: 2738 [2022-12-13 16:11:16,447 INFO L226 Difference]: Without dead ends: 2573 [2022-12-13 16:11:16,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:11:16,450 INFO L413 NwaCegarLoop]: 4130 mSDtfsCounter, 4598 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 16444 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:16,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 16444 Invalid, 1059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:11:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-12-13 16:11:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-12-13 16:11:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-12-13 16:11:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-12-13 16:11:16,547 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-12-13 16:11:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:16,547 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-12-13 16:11:16,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-12-13 16:11:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:16,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:16,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:16,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:11:16,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:16,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-12-13 16:11:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184001612] [2022-12-13 16:11:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:16,727 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 16:11:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184001612] [2022-12-13 16:11:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184001612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:16,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:16,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792375936] [2022-12-13 16:11:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:16,730 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:17,884 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-12-13 16:11:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:11:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:17,891 INFO L225 Difference]: With dead ends: 3131 [2022-12-13 16:11:17,891 INFO L226 Difference]: Without dead ends: 2798 [2022-12-13 16:11:17,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:11:17,893 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 4601 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 20901 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:17,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 20901 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-12-13 16:11:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-12-13 16:11:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-12-13 16:11:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-12-13 16:11:17,951 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-12-13 16:11:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:17,951 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-12-13 16:11:17,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-12-13 16:11:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:17,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:17,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:17,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:11:17,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-12-13 16:11:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:17,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948118807] [2022-12-13 16:11:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:18,093 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 16:11:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948118807] [2022-12-13 16:11:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948118807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:18,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:18,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688401562] [2022-12-13 16:11:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:18,096 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:19,240 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-12-13 16:11:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:11:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:19,253 INFO L225 Difference]: With dead ends: 3709 [2022-12-13 16:11:19,253 INFO L226 Difference]: Without dead ends: 3219 [2022-12-13 16:11:19,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:11:19,257 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4649 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20545 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:19,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20545 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-12-13 16:11:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-12-13 16:11:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-12-13 16:11:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-12-13 16:11:19,349 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-12-13 16:11:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:19,349 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-12-13 16:11:19,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-12-13 16:11:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:19,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:19,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:19,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:11:19,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-12-13 16:11:19,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:19,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616917676] [2022-12-13 16:11:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:19,463 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 16:11:19,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:19,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616917676] [2022-12-13 16:11:19,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616917676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:19,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:19,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663369099] [2022-12-13 16:11:19,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:19,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:19,466 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:20,590 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-12-13 16:11:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:11:20,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:20,605 INFO L225 Difference]: With dead ends: 4824 [2022-12-13 16:11:20,605 INFO L226 Difference]: Without dead ends: 4019 [2022-12-13 16:11:20,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:11:20,609 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4599 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4610 SdHoareTripleChecker+Valid, 20899 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:20,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4610 Valid, 20899 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:11:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-12-13 16:11:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-12-13 16:11:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-12-13 16:11:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-12-13 16:11:20,751 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-12-13 16:11:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:20,751 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-12-13 16:11:20,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-12-13 16:11:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:20,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:20,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:20,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:11:20,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-12-13 16:11:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:20,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413339863] [2022-12-13 16:11:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:20,876 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 16:11:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:20,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413339863] [2022-12-13 16:11:20,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413339863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:20,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:20,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683471] [2022-12-13 16:11:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:20,878 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:22,197 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-12-13 16:11:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:11:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:22,217 INFO L225 Difference]: With dead ends: 7566 [2022-12-13 16:11:22,217 INFO L226 Difference]: Without dead ends: 6130 [2022-12-13 16:11:22,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:11:22,224 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4769 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:22,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 20889 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-12-13 16:11:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-12-13 16:11:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-12-13 16:11:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-12-13 16:11:22,434 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-12-13 16:11:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:22,434 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-12-13 16:11:22,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-12-13 16:11:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:22,437 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:22,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:22,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:11:22,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-12-13 16:11:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:22,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257359953] [2022-12-13 16:11:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:22,530 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 16:11:22,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:22,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257359953] [2022-12-13 16:11:22,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257359953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:22,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:22,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:22,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640886462] [2022-12-13 16:11:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:22,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:22,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:22,532 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:24,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:24,194 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-12-13 16:11:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:11:24,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:24,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:24,221 INFO L225 Difference]: With dead ends: 12284 [2022-12-13 16:11:24,221 INFO L226 Difference]: Without dead ends: 9596 [2022-12-13 16:11:24,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:11:24,227 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4626 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:24,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4636 Valid, 20885 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-12-13 16:11:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-12-13 16:11:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-12-13 16:11:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-12-13 16:11:24,526 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-12-13 16:11:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:24,526 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-12-13 16:11:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-12-13 16:11:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:24,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:24,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:24,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:11:24,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-12-13 16:11:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266559395] [2022-12-13 16:11:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:24,624 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 16:11:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:24,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266559395] [2022-12-13 16:11:24,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266559395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:24,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:24,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058124418] [2022-12-13 16:11:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:24,626 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:26,631 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-12-13 16:11:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:11:26,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:26,677 INFO L225 Difference]: With dead ends: 21183 [2022-12-13 16:11:26,677 INFO L226 Difference]: Without dead ends: 16082 [2022-12-13 16:11:26,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:11:26,696 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4689 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4705 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:26,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4705 Valid, 20889 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-12-13 16:11:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-12-13 16:11:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-12-13 16:11:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-12-13 16:11:27,367 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-12-13 16:11:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:27,367 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-12-13 16:11:27,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-12-13 16:11:27,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:27,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:27,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:11:27,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-12-13 16:11:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:27,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352749419] [2022-12-13 16:11:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:27,467 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 16:11:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:27,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352749419] [2022-12-13 16:11:27,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352749419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:27,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:27,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461805594] [2022-12-13 16:11:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:27,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:27,469 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:30,235 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-12-13 16:11:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:11:30,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:30,296 INFO L225 Difference]: With dead ends: 38598 [2022-12-13 16:11:30,296 INFO L226 Difference]: Without dead ends: 28608 [2022-12-13 16:11:30,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:11:30,315 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4649 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:30,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 20889 Invalid, 1448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:11:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-12-13 16:11:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-12-13 16:11:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-12-13 16:11:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-12-13 16:11:31,654 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-12-13 16:11:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:31,654 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-12-13 16:11:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-12-13 16:11:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:31,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:31,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:11:31,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-12-13 16:11:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:31,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190314785] [2022-12-13 16:11:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:11:31,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:31,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190314785] [2022-12-13 16:11:31,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190314785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:31,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:31,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 16:11:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190032822] [2022-12-13 16:11:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:31,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:11:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:11:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:11:31,776 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:36,573 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-12-13 16:11:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 16:11:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:36,696 INFO L225 Difference]: With dead ends: 72173 [2022-12-13 16:11:36,696 INFO L226 Difference]: Without dead ends: 52438 [2022-12-13 16:11:36,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:11:36,734 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4591 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:36,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 20867 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 16:11:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-12-13 16:11:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-12-13 16:11:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-12-13 16:11:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-12-13 16:11:39,328 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-12-13 16:11:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-12-13 16:11:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-12-13 16:11:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 16:11:39,345 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:39,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:11:39,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-12-13 16:11:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:39,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117376980] [2022-12-13 16:11:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:39,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:39,422 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 16:11:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:39,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117376980] [2022-12-13 16:11:39,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117376980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:39,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:11:39,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:11:39,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12769125] [2022-12-13 16:11:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:11:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:11:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:11:39,424 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:45,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:45,716 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-12-13 16:11:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:11:45,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-12-13 16:11:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:45,894 INFO L225 Difference]: With dead ends: 113490 [2022-12-13 16:11:45,894 INFO L226 Difference]: Without dead ends: 74355 [2022-12-13 16:11:45,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:11:45,970 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4792 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 16667 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:45,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 16667 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 16:11:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-12-13 16:11:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-12-13 16:11:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-12-13 16:11:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-12-13 16:11:50,197 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-12-13 16:11:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:11:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-12-13 16:11:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 16:11:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-12-13 16:11:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 16:11:50,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:11:50,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:11:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:11:50,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:11:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:11:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-12-13 16:11:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:11:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954190421] [2022-12-13 16:11:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:11:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:11:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:11:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:11:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:11:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:11:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 16:11:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:11:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 16:11:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:11:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:11:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954190421] [2022-12-13 16:11:50,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954190421] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:11:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217916057] [2022-12-13 16:11:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:11:50,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:11:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:11:50,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:11:50,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:11:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:11:50,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:11:50,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:11:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:11:50,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:11:50,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217916057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:11:50,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:11:50,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 16:11:50,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906427759] [2022-12-13 16:11:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:11:50,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:11:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:11:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:11:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:11:50,723 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:11:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:11:57,706 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2022-12-13 16:11:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:11:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2022-12-13 16:11:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:11:58,064 INFO L225 Difference]: With dead ends: 176333 [2022-12-13 16:11:58,064 INFO L226 Difference]: Without dead ends: 117807 [2022-12-13 16:11:58,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:11:58,176 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4173 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:11:58,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:11:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2022-12-13 16:12:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2022-12-13 16:12:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117033 states, 103621 states have (on average 1.5118653554781367) internal successors, (156661), 104649 states have internal predecessors, (156661), 8034 states have call successors, (8034), 4608 states have call predecessors, (8034), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-12-13 16:12:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2022-12-13 16:12:06,351 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2022-12-13 16:12:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:12:06,352 INFO L495 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2022-12-13 16:12:06,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:12:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2022-12-13 16:12:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 16:12:06,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:12:06,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:12:06,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:12:06,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:12:06,686 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:12:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:12:06,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2022-12-13 16:12:06,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:12:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811505933] [2022-12-13 16:12:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:12:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:12:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:12:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:12:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:12:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:12:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:12:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 16:12:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:12:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 16:12:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:12:06,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:12:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811505933] [2022-12-13 16:12:06,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811505933] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:12:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018926167] [2022-12-13 16:12:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:12:06,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:12:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:12:06,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:12:06,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:12:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:06,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:12:06,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:12:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 16:12:07,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:12:07,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018926167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:12:07,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:12:07,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 16:12:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182159016] [2022-12-13 16:12:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:12:07,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:12:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:12:07,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:12:07,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:12:07,007 INFO L87 Difference]: Start difference. First operand 117033 states and 190484 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:12:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:12:21,472 INFO L93 Difference]: Finished difference Result 344050 states and 562286 transitions. [2022-12-13 16:12:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:12:21,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2022-12-13 16:12:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:12:22,263 INFO L225 Difference]: With dead ends: 344050 [2022-12-13 16:12:22,264 INFO L226 Difference]: Without dead ends: 229151 [2022-12-13 16:12:22,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:12:22,456 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4167 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4167 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:12:22,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4167 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:12:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229151 states. [2022-12-13 16:12:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229151 to 227605. [2022-12-13 16:12:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227605 states, 201223 states have (on average 1.5065126749924214) internal successors, (303145), 203277 states have internal predecessors, (303145), 15652 states have call successors, (15652), 9192 states have call predecessors, (15652), 10728 states have return successors, (50907), 15391 states have call predecessors, (50907), 15652 states have call successors, (50907) [2022-12-13 16:12:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227605 states to 227605 states and 369704 transitions. [2022-12-13 16:12:38,431 INFO L78 Accepts]: Start accepts. Automaton has 227605 states and 369704 transitions. Word has length 146 [2022-12-13 16:12:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:12:38,432 INFO L495 AbstractCegarLoop]: Abstraction has 227605 states and 369704 transitions. [2022-12-13 16:12:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 16:12:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 227605 states and 369704 transitions. [2022-12-13 16:12:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 16:12:38,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:12:38,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:12:38,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:12:38,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:12:38,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:12:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:12:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash -948680166, now seen corresponding path program 1 times [2022-12-13 16:12:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:12:38,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707320897] [2022-12-13 16:12:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:12:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:12:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:12:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:12:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:12:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:12:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:12:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 16:12:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:12:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 16:12:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 16:12:39,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:12:39,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707320897] [2022-12-13 16:12:39,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707320897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:12:39,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622683726] [2022-12-13 16:12:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:12:39,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:12:39,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:12:39,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:12:39,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:12:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:12:39,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:12:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:12:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 16:12:39,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:12:39,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622683726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:12:39,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:12:39,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 16:12:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968164622] [2022-12-13 16:12:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:12:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:12:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:12:39,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:12:39,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:12:39,261 INFO L87 Difference]: Start difference. First operand 227605 states and 369704 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 16:13:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:13:08,434 INFO L93 Difference]: Finished difference Result 670383 states and 1098975 transitions. [2022-12-13 16:13:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:13:08,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 146 [2022-12-13 16:13:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:13:10,236 INFO L225 Difference]: With dead ends: 670383 [2022-12-13 16:13:10,236 INFO L226 Difference]: Without dead ends: 444913 [2022-12-13 16:13:10,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:13:10,648 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 233 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 8682 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 16:13:10,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 8682 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:13:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444913 states. [2022-12-13 16:13:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444913 to 444913. [2022-12-13 16:13:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444913 states, 393472 states have (on average 1.4989961166232921) internal successors, (589813), 397063 states have internal predecessors, (589813), 30127 states have call successors, (30127), 18240 states have call predecessors, (30127), 21312 states have return successors, (105846), 30121 states have call predecessors, (105846), 30127 states have call successors, (105846) [2022-12-13 16:13:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444913 states to 444913 states and 725786 transitions. [2022-12-13 16:13:42,569 INFO L78 Accepts]: Start accepts. Automaton has 444913 states and 725786 transitions. Word has length 146 [2022-12-13 16:13:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:13:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 444913 states and 725786 transitions. [2022-12-13 16:13:42,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 16:13:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 444913 states and 725786 transitions. [2022-12-13 16:13:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-13 16:13:43,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:13:43,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 16:13:43,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:13:44,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:13:44,064 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:13:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash 682317025, now seen corresponding path program 1 times [2022-12-13 16:13:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:44,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194469363] [2022-12-13 16:13:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:13:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:13:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:13:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:13:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:13:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 16:13:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:13:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 16:13:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:13:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 16:13:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 16:13:44,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:44,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194469363] [2022-12-13 16:13:44,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194469363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:44,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334280490] [2022-12-13 16:13:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:44,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:44,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:44,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:44,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:13:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:44,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:13:44,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 16:13:44,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:13:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334280490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:44,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:13:44,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 16:13:44,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206804011] [2022-12-13 16:13:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:13:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:13:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:13:44,413 INFO L87 Difference]: Start difference. First operand 444913 states and 725786 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 16:14:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:14:40,919 INFO L93 Difference]: Finished difference Result 1318759 states and 2165505 transitions. [2022-12-13 16:14:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:14:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2022-12-13 16:14:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:14:44,379 INFO L225 Difference]: With dead ends: 1318759 [2022-12-13 16:14:44,380 INFO L226 Difference]: Without dead ends: 875987 [2022-12-13 16:14:45,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:14:45,471 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4112 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:14:45,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:14:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875987 states. [2022-12-13 16:15:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875987 to 869809. [2022-12-13 16:15:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869809 states, 769064 states have (on average 1.4961524658545973) internal successors, (1150637), 776243 states have internal predecessors, (1150637), 58407 states have call successors, (58407), 36192 states have call predecessors, (58407), 42336 states have return successors, (208342), 57885 states have call predecessors, (208342), 58407 states have call successors, (208342) [2022-12-13 16:15:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869809 states to 869809 states and 1417386 transitions. [2022-12-13 16:15:51,239 INFO L78 Accepts]: Start accepts. Automaton has 869809 states and 1417386 transitions. Word has length 190 [2022-12-13 16:15:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:15:51,240 INFO L495 AbstractCegarLoop]: Abstraction has 869809 states and 1417386 transitions. [2022-12-13 16:15:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 16:15:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 869809 states and 1417386 transitions. [2022-12-13 16:15:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-13 16:15:54,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:15:54,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 16:15:54,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:15:54,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:15:54,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:15:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:15:54,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1529313715, now seen corresponding path program 1 times [2022-12-13 16:15:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:15:54,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981115664] [2022-12-13 16:15:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:15:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:15:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 16:15:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:15:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 16:15:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 16:15:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 16:15:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 16:15:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:15:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 16:15:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 16:15:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 16:15:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 16:15:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:15:54,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981115664] [2022-12-13 16:15:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981115664] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:15:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371858896] [2022-12-13 16:15:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:15:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:15:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:15:54,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:15:54,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80e7b4-dc80-449e-bfa3-0c6b757df731/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:15:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:15:54,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:15:54,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:15:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 16:15:54,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:15:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371858896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:15:54,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:15:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 16:15:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357759424] [2022-12-13 16:15:54,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:15:54,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:15:54,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:15:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:15:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:15:54,904 INFO L87 Difference]: Start difference. First operand 869809 states and 1417386 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 16:17:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:17:47,499 INFO L93 Difference]: Finished difference Result 2580881 states and 4232517 transitions. [2022-12-13 16:17:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:17:47,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2022-12-13 16:17:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:17:54,873 INFO L225 Difference]: With dead ends: 2580881 [2022-12-13 16:17:54,873 INFO L226 Difference]: Without dead ends: 1713213 [2022-12-13 16:17:57,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:17:57,502 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4115 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4115 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:17:57,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4115 Valid, 4473 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:17:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713213 states.