./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+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_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/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_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/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_73541a77-27d2-4b68-9c0f-9f546bffe360/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 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc --- 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 17:26:03,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:26:03,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:26:03,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:26:03,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:26:03,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:26:03,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:26:03,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:26:03,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:26:03,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:26:03,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:26:03,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:26:03,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:26:03,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:26:03,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:26:03,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:26:03,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:26:03,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:26:03,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:26:03,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:26:03,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:26:03,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:26:03,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:26:03,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:26:03,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:26:03,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:26:03,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:26:03,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:26:03,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:26:03,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:26:03,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:26:03,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:26:03,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:26:03,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:26:03,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:26:03,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:26:03,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:26:03,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:26:03,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:26:03,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:26:03,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:26:03,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:26:03,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:26:03,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:26:03,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:26:03,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:26:03,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:26:03,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:26:03,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:26:03,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:26:03,142 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:26:03,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:26:03,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:26:03,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:26:03,144 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:26:03,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:26:03,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:26:03,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:26:03,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:26:03,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:26:03,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:26:03,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:03,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:26:03,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:26:03,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:26:03,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:26:03,146 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:26:03,147 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_73541a77-27d2-4b68-9c0f-9f546bffe360/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc [2022-12-13 17:26:03,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:26:03,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:26:03,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:26:03,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:26:03,367 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:26:03,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-12-13 17:26:06,099 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:26:06,249 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:26:06,250 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-12-13 17:26:06,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/data/2a26d1b89/b3bc40054cf8442382ffde9e92640b32/FLAG39e82de87 [2022-12-13 17:26:06,268 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/data/2a26d1b89/b3bc40054cf8442382ffde9e92640b32 [2022-12-13 17:26:06,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:26:06,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:26:06,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:06,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:26:06,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:26:06,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b66ff4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06, skipping insertion in model container [2022-12-13 17:26:06,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:26:06,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:26:06,409 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_73541a77-27d2-4b68-9c0f-9f546bffe360/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-12-13 17:26:06,443 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_73541a77-27d2-4b68-9c0f-9f546bffe360/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-12-13 17:26:06,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:06,484 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:26:06,493 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_73541a77-27d2-4b68-9c0f-9f546bffe360/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-12-13 17:26:06,507 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_73541a77-27d2-4b68-9c0f-9f546bffe360/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-12-13 17:26:06,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:26:06,542 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:26:06,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06 WrapperNode [2022-12-13 17:26:06,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:26:06,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:06,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:26:06,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:26:06,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,579 INFO L138 Inliner]: procedures = 61, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 576 [2022-12-13 17:26:06,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:26:06,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:26:06,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:26:06,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:26:06,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,605 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:26:06,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:26:06,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:26:06,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:26:06,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (1/1) ... [2022-12-13 17:26:06,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:26:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:06,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:26:06,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:26:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:26:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 17:26:06,663 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 17:26:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-12-13 17:26:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-12-13 17:26:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 17:26:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 17:26:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 17:26:06,664 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 17:26:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-12-13 17:26:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-12-13 17:26:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 17:26:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 17:26:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 17:26:06,665 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 17:26:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 17:26:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-12-13 17:26:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-12-13 17:26:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:26:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:26:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 17:26:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 17:26:06,744 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:26:06,745 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:26:07,212 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:26:07,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:26:07,222 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 17:26:07,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:07 BoogieIcfgContainer [2022-12-13 17:26:07,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:26:07,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:26:07,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:26:07,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:26:07,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:26:06" (1/3) ... [2022-12-13 17:26:07,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2df160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:07, skipping insertion in model container [2022-12-13 17:26:07,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:26:06" (2/3) ... [2022-12-13 17:26:07,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2df160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:26:07, skipping insertion in model container [2022-12-13 17:26:07,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:26:07" (3/3) ... [2022-12-13 17:26:07,234 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-12-13 17:26:07,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:26:07,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 17:26:07,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:26:07,318 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;@13e49808, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:26:07,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 17:26:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-13 17:26:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:07,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:07,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:07,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1541344950, now seen corresponding path program 1 times [2022-12-13 17:26:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280323928] [2022-12-13 17:26:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:07,738 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 17:26:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:07,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280323928] [2022-12-13 17:26:07,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280323928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:07,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:07,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:26:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270682606] [2022-12-13 17:26:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:07,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:26:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:26:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:07,775 INFO L87 Difference]: Start difference. First operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:08,757 INFO L93 Difference]: Finished difference Result 712 states and 1090 transitions. [2022-12-13 17:26:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:26:08,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 17:26:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:08,773 INFO L225 Difference]: With dead ends: 712 [2022-12-13 17:26:08,773 INFO L226 Difference]: Without dead ends: 439 [2022-12-13 17:26:08,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:26:08,781 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 871 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1517 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 17:26:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-12-13 17:26:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 373. [2022-12-13 17:26:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 305 states have (on average 1.4721311475409835) internal successors, (449), 312 states have internal predecessors, (449), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2022-12-13 17:26:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 544 transitions. [2022-12-13 17:26:08,868 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 544 transitions. Word has length 65 [2022-12-13 17:26:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 544 transitions. [2022-12-13 17:26:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 544 transitions. [2022-12-13 17:26:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:08,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:08,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:08,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:26:08,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -487241160, now seen corresponding path program 1 times [2022-12-13 17:26:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:08,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105126946] [2022-12-13 17:26:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:08,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:09,053 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 17:26:09,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:09,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105126946] [2022-12-13 17:26:09,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105126946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:09,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:09,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 17:26:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384507546] [2022-12-13 17:26:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:09,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:26:09,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:26:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:26:09,057 INFO L87 Difference]: Start difference. First operand 373 states and 544 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-13 17:26:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:10,423 INFO L93 Difference]: Finished difference Result 1320 states and 1873 transitions. [2022-12-13 17:26:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 17:26:10,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-12-13 17:26:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:10,428 INFO L225 Difference]: With dead ends: 1320 [2022-12-13 17:26:10,429 INFO L226 Difference]: Without dead ends: 1127 [2022-12-13 17:26:10,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 17:26:10,431 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 2224 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:10,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 1724 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 17:26:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-12-13 17:26:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1027. [2022-12-13 17:26:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 821 states have (on average 1.405602923264312) internal successors, (1154), 841 states have internal predecessors, (1154), 110 states have call successors, (110), 81 states have call predecessors, (110), 94 states have return successors, (141), 107 states have call predecessors, (141), 108 states have call successors, (141) [2022-12-13 17:26:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1405 transitions. [2022-12-13 17:26:10,494 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1405 transitions. Word has length 65 [2022-12-13 17:26:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:10,495 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1405 transitions. [2022-12-13 17:26:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-13 17:26:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1405 transitions. [2022-12-13 17:26:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:10,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:10,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:10,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:26:10,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1762343849, now seen corresponding path program 1 times [2022-12-13 17:26:10,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:10,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312862946] [2022-12-13 17:26:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:10,613 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 17:26:10,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:10,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312862946] [2022-12-13 17:26:10,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312862946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:10,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:10,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:26:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309387541] [2022-12-13 17:26:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:10,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:26:10,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:10,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:26:10,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:26:10,615 INFO L87 Difference]: Start difference. First operand 1027 states and 1405 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:11,275 INFO L93 Difference]: Finished difference Result 1937 states and 2621 transitions. [2022-12-13 17:26:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:26:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 17:26:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:11,281 INFO L225 Difference]: With dead ends: 1937 [2022-12-13 17:26:11,281 INFO L226 Difference]: Without dead ends: 1097 [2022-12-13 17:26:11,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:26:11,285 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 493 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:11,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1409 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:26:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-12-13 17:26:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1047. [2022-12-13 17:26:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 837 states have (on average 1.3906810035842294) internal successors, (1164), 857 states have internal predecessors, (1164), 110 states have call successors, (110), 81 states have call predecessors, (110), 98 states have return successors, (145), 111 states have call predecessors, (145), 108 states have call successors, (145) [2022-12-13 17:26:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1419 transitions. [2022-12-13 17:26:11,369 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1419 transitions. Word has length 65 [2022-12-13 17:26:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1419 transitions. [2022-12-13 17:26:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1419 transitions. [2022-12-13 17:26:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:11,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:11,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:26:11,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1503264149, now seen corresponding path program 1 times [2022-12-13 17:26:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:11,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995156508] [2022-12-13 17:26:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:11,507 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 17:26:11,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:11,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995156508] [2022-12-13 17:26:11,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995156508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:11,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:11,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:26:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367494495] [2022-12-13 17:26:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:26:11,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:26:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:26:11,509 INFO L87 Difference]: Start difference. First operand 1047 states and 1419 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:12,171 INFO L93 Difference]: Finished difference Result 2015 states and 2701 transitions. [2022-12-13 17:26:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:26:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-12-13 17:26:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:12,176 INFO L225 Difference]: With dead ends: 2015 [2022-12-13 17:26:12,176 INFO L226 Difference]: Without dead ends: 1155 [2022-12-13 17:26:12,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:26:12,179 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 335 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:12,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1581 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:26:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-12-13 17:26:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1097. [2022-12-13 17:26:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 877 states have (on average 1.3728620296465222) internal successors, (1204), 897 states have internal predecessors, (1204), 110 states have call successors, (110), 81 states have call predecessors, (110), 108 states have return successors, (155), 121 states have call predecessors, (155), 108 states have call successors, (155) [2022-12-13 17:26:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1469 transitions. [2022-12-13 17:26:12,250 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1469 transitions. Word has length 65 [2022-12-13 17:26:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:12,250 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1469 transitions. [2022-12-13 17:26:12,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1469 transitions. [2022-12-13 17:26:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:12,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:12,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:26:12,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1405499753, now seen corresponding path program 1 times [2022-12-13 17:26:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658976267] [2022-12-13 17:26:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:12,372 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 17:26:12,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:12,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658976267] [2022-12-13 17:26:12,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658976267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:12,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:12,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:26:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161329730] [2022-12-13 17:26:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:12,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:26:12,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:26:12,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:12,375 INFO L87 Difference]: Start difference. First operand 1097 states and 1469 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:12,967 INFO L93 Difference]: Finished difference Result 2234 states and 2952 transitions. [2022-12-13 17:26:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:26:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 17:26:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:12,974 INFO L225 Difference]: With dead ends: 2234 [2022-12-13 17:26:12,975 INFO L226 Difference]: Without dead ends: 1562 [2022-12-13 17:26:12,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:26:12,977 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 583 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:12,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1151 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:26:12,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-12-13 17:26:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1434. [2022-12-13 17:26:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1148 states have (on average 1.343205574912892) internal successors, (1542), 1171 states have internal predecessors, (1542), 142 states have call successors, (142), 111 states have call predecessors, (142), 142 states have return successors, (192), 154 states have call predecessors, (192), 140 states have call successors, (192) [2022-12-13 17:26:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1876 transitions. [2022-12-13 17:26:13,088 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1876 transitions. Word has length 65 [2022-12-13 17:26:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:13,088 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1876 transitions. [2022-12-13 17:26:13,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1876 transitions. [2022-12-13 17:26:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:13,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:13,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:13,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:26:13,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1264951143, now seen corresponding path program 1 times [2022-12-13 17:26:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:13,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582084733] [2022-12-13 17:26:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:13,220 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 17:26:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:13,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582084733] [2022-12-13 17:26:13,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582084733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:13,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:13,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:26:13,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857946585] [2022-12-13 17:26:13,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:13,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:26:13,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:13,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:26:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:13,222 INFO L87 Difference]: Start difference. First operand 1434 states and 1876 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:13,914 INFO L93 Difference]: Finished difference Result 2510 states and 3239 transitions. [2022-12-13 17:26:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:26:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 17:26:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:13,918 INFO L225 Difference]: With dead ends: 2510 [2022-12-13 17:26:13,918 INFO L226 Difference]: Without dead ends: 1501 [2022-12-13 17:26:13,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:26:13,920 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 988 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:13,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 999 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:26:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2022-12-13 17:26:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1341. [2022-12-13 17:26:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1078 states have (on average 1.342300556586271) internal successors, (1447), 1096 states have internal predecessors, (1447), 134 states have call successors, (134), 104 states have call predecessors, (134), 127 states have return successors, (170), 142 states have call predecessors, (170), 132 states have call successors, (170) [2022-12-13 17:26:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1751 transitions. [2022-12-13 17:26:13,974 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1751 transitions. Word has length 65 [2022-12-13 17:26:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:13,974 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1751 transitions. [2022-12-13 17:26:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1751 transitions. [2022-12-13 17:26:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:26:13,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:13,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:13,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:26:13,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1398964649, now seen corresponding path program 1 times [2022-12-13 17:26:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:13,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201327709] [2022-12-13 17:26:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:13,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,058 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 17:26:14,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:14,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201327709] [2022-12-13 17:26:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201327709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:14,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:14,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880435954] [2022-12-13 17:26:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:14,060 INFO L87 Difference]: Start difference. First operand 1341 states and 1751 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:14,609 INFO L93 Difference]: Finished difference Result 3720 states and 4793 transitions. [2022-12-13 17:26:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:26:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-12-13 17:26:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:14,620 INFO L225 Difference]: With dead ends: 3720 [2022-12-13 17:26:14,620 INFO L226 Difference]: Without dead ends: 2566 [2022-12-13 17:26:14,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:26:14,622 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 972 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:14,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 796 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:26:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-12-13 17:26:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2426. [2022-12-13 17:26:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1925 states have (on average 1.3012987012987014) internal successors, (2505), 1958 states have internal predecessors, (2505), 249 states have call successors, (249), 201 states have call predecessors, (249), 250 states have return successors, (356), 269 states have call predecessors, (356), 247 states have call successors, (356) [2022-12-13 17:26:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3110 transitions. [2022-12-13 17:26:14,729 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3110 transitions. Word has length 65 [2022-12-13 17:26:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:14,730 INFO L495 AbstractCegarLoop]: Abstraction has 2426 states and 3110 transitions. [2022-12-13 17:26:14,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 17:26:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3110 transitions. [2022-12-13 17:26:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:26:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:14,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:26:14,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 264887933, now seen corresponding path program 1 times [2022-12-13 17:26:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958027430] [2022-12-13 17:26:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:14,785 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 17:26:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:14,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958027430] [2022-12-13 17:26:14,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958027430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:14,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:14,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934379383] [2022-12-13 17:26:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:14,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:14,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:14,786 INFO L87 Difference]: Start difference. First operand 2426 states and 3110 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:15,416 INFO L93 Difference]: Finished difference Result 5570 states and 7140 transitions. [2022-12-13 17:26:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:26:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 17:26:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:15,426 INFO L225 Difference]: With dead ends: 5570 [2022-12-13 17:26:15,427 INFO L226 Difference]: Without dead ends: 3479 [2022-12-13 17:26:15,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:26:15,430 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 511 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:15,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 943 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:26:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-12-13 17:26:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3223. [2022-12-13 17:26:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2548 states have (on average 1.2880690737833596) internal successors, (3282), 2577 states have internal predecessors, (3282), 339 states have call successors, (339), 279 states have call predecessors, (339), 334 states have return successors, (473), 369 states have call predecessors, (473), 337 states have call successors, (473) [2022-12-13 17:26:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4094 transitions. [2022-12-13 17:26:15,603 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4094 transitions. Word has length 66 [2022-12-13 17:26:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:15,604 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4094 transitions. [2022-12-13 17:26:15,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4094 transitions. [2022-12-13 17:26:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:26:15,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:15,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:15,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:26:15,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1723127592, now seen corresponding path program 1 times [2022-12-13 17:26:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:15,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814516648] [2022-12-13 17:26:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:15,661 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 17:26:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:15,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814516648] [2022-12-13 17:26:15,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814516648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:15,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:15,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:15,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093405759] [2022-12-13 17:26:15,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:15,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:15,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:15,663 INFO L87 Difference]: Start difference. First operand 3223 states and 4094 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:16,202 INFO L93 Difference]: Finished difference Result 7713 states and 9720 transitions. [2022-12-13 17:26:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:26:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-12-13 17:26:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:16,219 INFO L225 Difference]: With dead ends: 7713 [2022-12-13 17:26:16,219 INFO L226 Difference]: Without dead ends: 4680 [2022-12-13 17:26:16,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:26:16,226 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 963 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:16,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 633 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:26:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2022-12-13 17:26:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4312. [2022-12-13 17:26:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 3387 states have (on average 1.2669028638913493) internal successors, (4291), 3432 states have internal predecessors, (4291), 465 states have call successors, (465), 389 states have call predecessors, (465), 458 states have return successors, (642), 493 states have call predecessors, (642), 463 states have call successors, (642) [2022-12-13 17:26:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 5398 transitions. [2022-12-13 17:26:16,496 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 5398 transitions. Word has length 66 [2022-12-13 17:26:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:16,496 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 5398 transitions. [2022-12-13 17:26:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 17:26:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 5398 transitions. [2022-12-13 17:26:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 17:26:16,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:16,497 INFO L195 NwaCegarLoop]: trace histogram [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 17:26:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:26:16,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash -792696971, now seen corresponding path program 1 times [2022-12-13 17:26:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082006186] [2022-12-13 17:26:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:16,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:16,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082006186] [2022-12-13 17:26:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082006186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:16,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:16,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799343945] [2022-12-13 17:26:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:16,561 INFO L87 Difference]: Start difference. First operand 4312 states and 5398 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 17:26:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:17,201 INFO L93 Difference]: Finished difference Result 5057 states and 6301 transitions. [2022-12-13 17:26:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:26:17,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-12-13 17:26:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:17,212 INFO L225 Difference]: With dead ends: 5057 [2022-12-13 17:26:17,212 INFO L226 Difference]: Without dead ends: 5054 [2022-12-13 17:26:17,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:26:17,214 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1313 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:17,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 633 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:26:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-12-13 17:26:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 4437. [2022-12-13 17:26:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 3497 states have (on average 1.2670860737775236) internal successors, (4431), 3543 states have internal predecessors, (4431), 472 states have call successors, (472), 397 states have call predecessors, (472), 466 states have return successors, (653), 499 states have call predecessors, (653), 471 states have call successors, (653) [2022-12-13 17:26:17,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 5556 transitions. [2022-12-13 17:26:17,461 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 5556 transitions. Word has length 73 [2022-12-13 17:26:17,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:17,461 INFO L495 AbstractCegarLoop]: Abstraction has 4437 states and 5556 transitions. [2022-12-13 17:26:17,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 17:26:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 5556 transitions. [2022-12-13 17:26:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 17:26:17,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:17,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:17,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:26:17,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:17,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1195350886, now seen corresponding path program 1 times [2022-12-13 17:26:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:17,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097675548] [2022-12-13 17:26:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:17,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097675548] [2022-12-13 17:26:17,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097675548] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:26:17,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139274071] [2022-12-13 17:26:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:26:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:26:17,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:26:17,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:26:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:17,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:26:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:26:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:17,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:26:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:18,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139274071] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:26:18,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:26:18,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-12-13 17:26:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587121193] [2022-12-13 17:26:18,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:26:18,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:26:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:26:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:26:18,049 INFO L87 Difference]: Start difference. First operand 4437 states and 5556 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 17:26:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:19,823 INFO L93 Difference]: Finished difference Result 9615 states and 11886 transitions. [2022-12-13 17:26:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 17:26:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-12-13 17:26:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:19,845 INFO L225 Difference]: With dead ends: 9615 [2022-12-13 17:26:19,846 INFO L226 Difference]: Without dead ends: 9612 [2022-12-13 17:26:19,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-12-13 17:26:19,848 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1131 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:19,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1830 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:26:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-12-13 17:26:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 7843. [2022-12-13 17:26:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 6163 states have (on average 1.2588025312347884) internal successors, (7758), 6244 states have internal predecessors, (7758), 834 states have call successors, (834), 711 states have call predecessors, (834), 844 states have return successors, (1164), 890 states have call predecessors, (1164), 833 states have call successors, (1164) [2022-12-13 17:26:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 9756 transitions. [2022-12-13 17:26:20,271 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 9756 transitions. Word has length 74 [2022-12-13 17:26:20,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:20,271 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 9756 transitions. [2022-12-13 17:26:20,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 17:26:20,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 9756 transitions. [2022-12-13 17:26:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:26:20,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:20,273 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:20,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:26:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:26:20,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash 85235253, now seen corresponding path program 2 times [2022-12-13 17:26:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113167500] [2022-12-13 17:26:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:26:20,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113167500] [2022-12-13 17:26:20,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113167500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:20,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:20,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693812187] [2022-12-13 17:26:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:20,559 INFO L87 Difference]: Start difference. First operand 7843 states and 9756 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 17:26:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:21,213 INFO L93 Difference]: Finished difference Result 9703 states and 12135 transitions. [2022-12-13 17:26:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:26:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-12-13 17:26:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:21,223 INFO L225 Difference]: With dead ends: 9703 [2022-12-13 17:26:21,223 INFO L226 Difference]: Without dead ends: 3955 [2022-12-13 17:26:21,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:26:21,230 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 677 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:21,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 898 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:26:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-12-13 17:26:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3485. [2022-12-13 17:26:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 2737 states have (on average 1.247716477895506) internal successors, (3415), 2771 states have internal predecessors, (3415), 376 states have call successors, (376), 313 states have call predecessors, (376), 370 states have return successors, (494), 403 states have call predecessors, (494), 375 states have call successors, (494) [2022-12-13 17:26:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4285 transitions. [2022-12-13 17:26:21,464 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4285 transitions. Word has length 77 [2022-12-13 17:26:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:21,464 INFO L495 AbstractCegarLoop]: Abstraction has 3485 states and 4285 transitions. [2022-12-13 17:26:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 17:26:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4285 transitions. [2022-12-13 17:26:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 17:26:21,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:21,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:21,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:26:21,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -494782792, now seen corresponding path program 1 times [2022-12-13 17:26:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:21,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088769116] [2022-12-13 17:26:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:21,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:26:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:26:21,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:21,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088769116] [2022-12-13 17:26:21,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088769116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:21,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:21,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:26:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406083072] [2022-12-13 17:26:21,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:21,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:26:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:26:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:26:21,550 INFO L87 Difference]: Start difference. First operand 3485 states and 4285 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 17:26:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:22,555 INFO L93 Difference]: Finished difference Result 10171 states and 12399 transitions. [2022-12-13 17:26:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 17:26:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-12-13 17:26:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:22,569 INFO L225 Difference]: With dead ends: 10171 [2022-12-13 17:26:22,569 INFO L226 Difference]: Without dead ends: 6309 [2022-12-13 17:26:22,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:26:22,574 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1128 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:22,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1220 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:26:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2022-12-13 17:26:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5980. [2022-12-13 17:26:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 4628 states have (on average 1.2134831460674158) internal successors, (5616), 4710 states have internal predecessors, (5616), 656 states have call successors, (656), 553 states have call predecessors, (656), 694 states have return successors, (980), 719 states have call predecessors, (980), 655 states have call successors, (980) [2022-12-13 17:26:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 7252 transitions. [2022-12-13 17:26:22,900 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 7252 transitions. Word has length 84 [2022-12-13 17:26:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:22,900 INFO L495 AbstractCegarLoop]: Abstraction has 5980 states and 7252 transitions. [2022-12-13 17:26:22,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 17:26:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 7252 transitions. [2022-12-13 17:26:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 17:26:22,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:22,902 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:26:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:26:22,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -98004109, now seen corresponding path program 1 times [2022-12-13 17:26:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525869790] [2022-12-13 17:26:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:26:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:26:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:26:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:26:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:26:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:26:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:26:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:26:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:22,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525869790] [2022-12-13 17:26:22,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525869790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:22,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:22,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:26:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237937714] [2022-12-13 17:26:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:22,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:26:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:26:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:26:22,992 INFO L87 Difference]: Start difference. First operand 5980 states and 7252 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 17:26:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:24,103 INFO L93 Difference]: Finished difference Result 10437 states and 12592 transitions. [2022-12-13 17:26:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:26:24,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-12-13 17:26:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:24,113 INFO L225 Difference]: With dead ends: 10437 [2022-12-13 17:26:24,113 INFO L226 Difference]: Without dead ends: 5574 [2022-12-13 17:26:24,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-13 17:26:24,118 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1379 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:24,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1281 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:26:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2022-12-13 17:26:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5220. [2022-12-13 17:26:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 4033 states have (on average 1.2005950905033473) internal successors, (4842), 4110 states have internal predecessors, (4842), 567 states have call successors, (567), 476 states have call predecessors, (567), 618 states have return successors, (799), 636 states have call predecessors, (799), 566 states have call successors, (799) [2022-12-13 17:26:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 6208 transitions. [2022-12-13 17:26:24,413 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 6208 transitions. Word has length 93 [2022-12-13 17:26:24,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:24,413 INFO L495 AbstractCegarLoop]: Abstraction has 5220 states and 6208 transitions. [2022-12-13 17:26:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 17:26:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 6208 transitions. [2022-12-13 17:26:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:24,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:24,415 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 17:26:24,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:26:24,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1764116269, now seen corresponding path program 1 times [2022-12-13 17:26:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950538346] [2022-12-13 17:26:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:24,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:24,488 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 17:26:24,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:24,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950538346] [2022-12-13 17:26:24,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950538346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:24,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:24,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:26:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872370222] [2022-12-13 17:26:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:24,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:26:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:26:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:26:24,489 INFO L87 Difference]: Start difference. First operand 5220 states and 6208 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 17:26:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:25,745 INFO L93 Difference]: Finished difference Result 5660 states and 6895 transitions. [2022-12-13 17:26:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:26:25,746 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 17:26:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:25,755 INFO L225 Difference]: With dead ends: 5660 [2022-12-13 17:26:25,755 INFO L226 Difference]: Without dead ends: 5495 [2022-12-13 17:26:25,757 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 17:26:25,758 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 858 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:25,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 838 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 17:26:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-12-13 17:26:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 5388. [2022-12-13 17:26:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 4181 states have (on average 1.2126285577613012) internal successors, (5070), 4259 states have internal predecessors, (5070), 580 states have call successors, (580), 482 states have call predecessors, (580), 625 states have return successors, (815), 649 states have call predecessors, (815), 579 states have call successors, (815) [2022-12-13 17:26:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 6465 transitions. [2022-12-13 17:26:26,263 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 6465 transitions. Word has length 90 [2022-12-13 17:26:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:26,263 INFO L495 AbstractCegarLoop]: Abstraction has 5388 states and 6465 transitions. [2022-12-13 17:26:26,263 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 17:26:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 6465 transitions. [2022-12-13 17:26:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:26,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:26,264 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 17:26:26,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:26:26,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash 589456817, now seen corresponding path program 1 times [2022-12-13 17:26:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:26,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215767668] [2022-12-13 17:26:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:26,357 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 17:26:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:26,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215767668] [2022-12-13 17:26:26,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215767668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:26,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:26,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321437559] [2022-12-13 17:26:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:26,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:26,359 INFO L87 Difference]: Start difference. First operand 5388 states and 6465 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 17:26:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:28,038 INFO L93 Difference]: Finished difference Result 6053 states and 7497 transitions. [2022-12-13 17:26:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:26:28,038 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 17:26:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:28,048 INFO L225 Difference]: With dead ends: 6053 [2022-12-13 17:26:28,048 INFO L226 Difference]: Without dead ends: 5720 [2022-12-13 17:26:28,050 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 17:26:28,050 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 859 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:28,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1391 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:26:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2022-12-13 17:26:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5545. [2022-12-13 17:26:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 4318 states have (on average 1.221861973135711) internal successors, (5276), 4397 states have internal predecessors, (5276), 593 states have call successors, (593), 488 states have call predecessors, (593), 632 states have return successors, (830), 663 states have call predecessors, (830), 592 states have call successors, (830) [2022-12-13 17:26:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6699 transitions. [2022-12-13 17:26:28,615 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6699 transitions. Word has length 90 [2022-12-13 17:26:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:28,616 INFO L495 AbstractCegarLoop]: Abstraction has 5545 states and 6699 transitions. [2022-12-13 17:26:28,616 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 17:26:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6699 transitions. [2022-12-13 17:26:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:28,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:28,617 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 17:26:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 17:26:28,617 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1476679663, now seen corresponding path program 1 times [2022-12-13 17:26:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350995380] [2022-12-13 17:26:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:28,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:28,718 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 17:26:28,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:28,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350995380] [2022-12-13 17:26:28,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350995380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:28,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:28,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770048605] [2022-12-13 17:26:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:28,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:28,720 INFO L87 Difference]: Start difference. First operand 5545 states and 6699 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 17:26:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:30,335 INFO L93 Difference]: Finished difference Result 6631 states and 8379 transitions. [2022-12-13 17:26:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:26:30,336 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 17:26:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:30,346 INFO L225 Difference]: With dead ends: 6631 [2022-12-13 17:26:30,346 INFO L226 Difference]: Without dead ends: 6141 [2022-12-13 17:26:30,349 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 17:26:30,349 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 857 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:30,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1389 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 17:26:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2022-12-13 17:26:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5860. [2022-12-13 17:26:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5860 states, 4593 states have (on average 1.2386239930328762) internal successors, (5689), 4674 states have internal predecessors, (5689), 619 states have call successors, (619), 500 states have call predecessors, (619), 646 states have return successors, (864), 691 states have call predecessors, (864), 618 states have call successors, (864) [2022-12-13 17:26:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 7172 transitions. [2022-12-13 17:26:30,844 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 7172 transitions. Word has length 90 [2022-12-13 17:26:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:30,844 INFO L495 AbstractCegarLoop]: Abstraction has 5860 states and 7172 transitions. [2022-12-13 17:26:30,845 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 17:26:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 7172 transitions. [2022-12-13 17:26:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:30,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:30,846 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 17:26:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 17:26:30,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash -434362895, now seen corresponding path program 1 times [2022-12-13 17:26:30,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146366808] [2022-12-13 17:26:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:30,929 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 17:26:30,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:30,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146366808] [2022-12-13 17:26:30,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146366808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:30,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:30,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850128465] [2022-12-13 17:26:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:30,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:30,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:30,931 INFO L87 Difference]: Start difference. First operand 5860 states and 7172 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 17:26:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:32,426 INFO L93 Difference]: Finished difference Result 7746 states and 10076 transitions. [2022-12-13 17:26:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:26:32,426 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 17:26:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:32,437 INFO L225 Difference]: With dead ends: 7746 [2022-12-13 17:26:32,437 INFO L226 Difference]: Without dead ends: 6941 [2022-12-13 17:26:32,441 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 17:26:32,441 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 853 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:32,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1389 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:26:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2022-12-13 17:26:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6491. [2022-12-13 17:26:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 5144 states have (on average 1.2665241057542769) internal successors, (6515), 5229 states have internal predecessors, (6515), 671 states have call successors, (671), 524 states have call predecessors, (671), 674 states have return successors, (938), 747 states have call predecessors, (938), 670 states have call successors, (938) [2022-12-13 17:26:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8124 transitions. [2022-12-13 17:26:33,085 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8124 transitions. Word has length 90 [2022-12-13 17:26:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:33,085 INFO L495 AbstractCegarLoop]: Abstraction has 6491 states and 8124 transitions. [2022-12-13 17:26:33,085 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 17:26:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8124 transitions. [2022-12-13 17:26:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:33,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:33,087 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 17:26:33,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 17:26:33,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash -357462097, now seen corresponding path program 1 times [2022-12-13 17:26:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:33,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180079889] [2022-12-13 17:26:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:33,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:33,193 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 17:26:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:33,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180079889] [2022-12-13 17:26:33,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180079889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:33,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:33,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936985440] [2022-12-13 17:26:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:33,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:33,195 INFO L87 Difference]: Start difference. First operand 6491 states and 8124 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 17:26:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:34,776 INFO L93 Difference]: Finished difference Result 9975 states and 13486 transitions. [2022-12-13 17:26:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:26:34,776 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 17:26:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:34,789 INFO L225 Difference]: With dead ends: 9975 [2022-12-13 17:26:34,789 INFO L226 Difference]: Without dead ends: 8539 [2022-12-13 17:26:34,792 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 17:26:34,793 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 855 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:34,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1389 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:26:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2022-12-13 17:26:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 7758. [2022-12-13 17:26:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 6251 states have (on average 1.3074708046712527) internal successors, (8173), 6344 states have internal predecessors, (8173), 775 states have call successors, (775), 572 states have call predecessors, (775), 730 states have return successors, (1104), 859 states have call predecessors, (1104), 774 states have call successors, (1104) [2022-12-13 17:26:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10052 transitions. [2022-12-13 17:26:35,457 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10052 transitions. Word has length 90 [2022-12-13 17:26:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:35,457 INFO L495 AbstractCegarLoop]: Abstraction has 7758 states and 10052 transitions. [2022-12-13 17:26:35,458 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 17:26:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10052 transitions. [2022-12-13 17:26:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:35,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:35,460 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 17:26:35,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:26:35,461 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1324812751, now seen corresponding path program 1 times [2022-12-13 17:26:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976966192] [2022-12-13 17:26:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:35,563 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 17:26:35,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:35,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976966192] [2022-12-13 17:26:35,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976966192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:35,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:35,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575400675] [2022-12-13 17:26:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:35,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:35,565 INFO L87 Difference]: Start difference. First operand 7758 states and 10052 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 17:26:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:38,104 INFO L93 Difference]: Finished difference Result 15265 states and 21602 transitions. [2022-12-13 17:26:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:26:38,104 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 17:26:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:38,123 INFO L225 Difference]: With dead ends: 15265 [2022-12-13 17:26:38,123 INFO L226 Difference]: Without dead ends: 12562 [2022-12-13 17:26:38,128 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 17:26:38,129 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 1032 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:38,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1047 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 17:26:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-12-13 17:26:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 10194. [2022-12-13 17:26:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10194 states, 8383 states have (on average 1.3576285339377312) internal successors, (11381), 8492 states have internal predecessors, (11381), 967 states have call successors, (967), 668 states have call predecessors, (967), 842 states have return successors, (1474), 1067 states have call predecessors, (1474), 966 states have call successors, (1474) [2022-12-13 17:26:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10194 states to 10194 states and 13822 transitions. [2022-12-13 17:26:39,013 INFO L78 Accepts]: Start accepts. Automaton has 10194 states and 13822 transitions. Word has length 90 [2022-12-13 17:26:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:39,013 INFO L495 AbstractCegarLoop]: Abstraction has 10194 states and 13822 transitions. [2022-12-13 17:26:39,013 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 17:26:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10194 states and 13822 transitions. [2022-12-13 17:26:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:39,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:39,018 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 17:26:39,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:26:39,018 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1817438925, now seen corresponding path program 1 times [2022-12-13 17:26:39,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:39,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896030844] [2022-12-13 17:26:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:39,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:39,120 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 17:26:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896030844] [2022-12-13 17:26:39,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896030844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:39,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:39,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:39,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762177900] [2022-12-13 17:26:39,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:39,122 INFO L87 Difference]: Start difference. First operand 10194 states and 13822 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 17:26:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:42,225 INFO L93 Difference]: Finished difference Result 24231 states and 35574 transitions. [2022-12-13 17:26:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:26:42,225 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 17:26:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:42,261 INFO L225 Difference]: With dead ends: 24231 [2022-12-13 17:26:42,261 INFO L226 Difference]: Without dead ends: 19092 [2022-12-13 17:26:42,272 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 17:26:42,273 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 873 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:42,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1379 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 17:26:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19092 states. [2022-12-13 17:26:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19092 to 15127. [2022-12-13 17:26:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 12724 states have (on average 1.4095410248349576) internal successors, (17935), 12865 states have internal predecessors, (17935), 1335 states have call successors, (1335), 860 states have call predecessors, (1335), 1066 states have return successors, (2360), 1467 states have call predecessors, (2360), 1334 states have call successors, (2360) [2022-12-13 17:26:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 21630 transitions. [2022-12-13 17:26:43,599 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 21630 transitions. Word has length 90 [2022-12-13 17:26:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:43,599 INFO L495 AbstractCegarLoop]: Abstraction has 15127 states and 21630 transitions. [2022-12-13 17:26:43,599 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 17:26:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 21630 transitions. [2022-12-13 17:26:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:43,604 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:43,604 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 17:26:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 17:26:43,604 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:43,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash -863498767, now seen corresponding path program 1 times [2022-12-13 17:26:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:43,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167708676] [2022-12-13 17:26:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:43,689 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 17:26:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:43,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167708676] [2022-12-13 17:26:43,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167708676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:43,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:43,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849237326] [2022-12-13 17:26:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:43,691 INFO L87 Difference]: Start difference. First operand 15127 states and 21630 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 17:26:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:47,798 INFO L93 Difference]: Finished difference Result 41778 states and 63572 transitions. [2022-12-13 17:26:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:26:47,799 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 17:26:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:47,871 INFO L225 Difference]: With dead ends: 41778 [2022-12-13 17:26:47,871 INFO L226 Difference]: Without dead ends: 31706 [2022-12-13 17:26:47,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:26:47,896 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 906 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:47,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1379 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 17:26:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31706 states. [2022-12-13 17:26:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31706 to 24960. [2022-12-13 17:26:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24960 states, 21405 states have (on average 1.4516701705209063) internal successors, (31073), 21610 states have internal predecessors, (31073), 2039 states have call successors, (2039), 1244 states have call predecessors, (2039), 1514 states have return successors, (4586), 2235 states have call predecessors, (4586), 2038 states have call successors, (4586) [2022-12-13 17:26:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24960 states to 24960 states and 37698 transitions. [2022-12-13 17:26:50,395 INFO L78 Accepts]: Start accepts. Automaton has 24960 states and 37698 transitions. Word has length 90 [2022-12-13 17:26:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:26:50,395 INFO L495 AbstractCegarLoop]: Abstraction has 24960 states and 37698 transitions. [2022-12-13 17:26:50,395 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 17:26:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 24960 states and 37698 transitions. [2022-12-13 17:26:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:26:50,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:26:50,404 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 17:26:50,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 17:26:50,404 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:26:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:26:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2079652493, now seen corresponding path program 1 times [2022-12-13 17:26:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:26:50,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782372203] [2022-12-13 17:26:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:26:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:26:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:26:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:26:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:26:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:26:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:26:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:26:50,485 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 17:26:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:26:50,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782372203] [2022-12-13 17:26:50,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782372203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:26:50,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:26:50,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:26:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203030704] [2022-12-13 17:26:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:26:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:26:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:26:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:26:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:26:50,486 INFO L87 Difference]: Start difference. First operand 24960 states and 37698 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 17:26:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:26:57,302 INFO L93 Difference]: Finished difference Result 75689 states and 119626 transitions. [2022-12-13 17:26:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:26:57,302 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 17:26:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:26:57,439 INFO L225 Difference]: With dead ends: 75689 [2022-12-13 17:26:57,439 INFO L226 Difference]: Without dead ends: 55784 [2022-12-13 17:26:57,481 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 17:26:57,481 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 863 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:26:57,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1379 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:26:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55784 states. [2022-12-13 17:27:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55784 to 44561. [2022-12-13 17:27:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44561 states, 38766 states have (on average 1.4809626992725584) internal successors, (57411), 39099 states have internal predecessors, (57411), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-12-13 17:27:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44561 states to 44561 states and 71226 transitions. [2022-12-13 17:27:01,928 INFO L78 Accepts]: Start accepts. Automaton has 44561 states and 71226 transitions. Word has length 90 [2022-12-13 17:27:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:01,928 INFO L495 AbstractCegarLoop]: Abstraction has 44561 states and 71226 transitions. [2022-12-13 17:27:01,928 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 17:27:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 44561 states and 71226 transitions. [2022-12-13 17:27:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:27:01,947 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:01,947 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 17:27:01,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:27:01,947 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1483347377, now seen corresponding path program 1 times [2022-12-13 17:27:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:01,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721110575] [2022-12-13 17:27:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:01,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:27:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:27:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:27:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:02,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:27:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:27:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:02,042 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 17:27:02,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:02,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721110575] [2022-12-13 17:27:02,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721110575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:02,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:02,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:27:02,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505097610] [2022-12-13 17:27:02,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:02,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:27:02,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:27:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:27:02,044 INFO L87 Difference]: Start difference. First operand 44561 states and 71226 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 17:27:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:12,749 INFO L93 Difference]: Finished difference Result 113398 states and 180003 transitions. [2022-12-13 17:27:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:27:12,749 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 17:27:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:12,971 INFO L225 Difference]: With dead ends: 113398 [2022-12-13 17:27:12,971 INFO L226 Difference]: Without dead ends: 73893 [2022-12-13 17:27:13,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:27:13,055 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 561 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:13,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1142 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:27:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73893 states. [2022-12-13 17:27:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73893 to 45332. [2022-12-13 17:27:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45332 states, 39537 states have (on average 1.4715835799377799) internal successors, (58182), 39870 states have internal predecessors, (58182), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-12-13 17:27:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 71997 transitions. [2022-12-13 17:27:17,751 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 71997 transitions. Word has length 90 [2022-12-13 17:27:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:17,751 INFO L495 AbstractCegarLoop]: Abstraction has 45332 states and 71997 transitions. [2022-12-13 17:27:17,751 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 17:27:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 71997 transitions. [2022-12-13 17:27:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:27:17,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:17,769 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 17:27:17,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:27:17,769 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1550702669, now seen corresponding path program 1 times [2022-12-13 17:27:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:17,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152499971] [2022-12-13 17:27:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:27:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:27:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:27:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:27:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:27:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:17,870 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 17:27:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152499971] [2022-12-13 17:27:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152499971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:17,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:17,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:27:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184484681] [2022-12-13 17:27:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:27:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:27:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:27:17,871 INFO L87 Difference]: Start difference. First operand 45332 states and 71997 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 17:27:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:36,092 INFO L93 Difference]: Finished difference Result 185375 states and 302831 transitions. [2022-12-13 17:27:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:27:36,093 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 17:27:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:36,565 INFO L225 Difference]: With dead ends: 185375 [2022-12-13 17:27:36,565 INFO L226 Difference]: Without dead ends: 145099 [2022-12-13 17:27:36,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:27:36,792 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1847 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:36,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1207 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 17:27:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145099 states. [2022-12-13 17:27:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145099 to 120930. [2022-12-13 17:27:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120930 states, 105925 states have (on average 1.483077649280151) internal successors, (157095), 107157 states have internal predecessors, (157095), 8991 states have call successors, (8991), 5102 states have call predecessors, (8991), 6012 states have return successors, (29049), 8928 states have call predecessors, (29049), 8990 states have call successors, (29049) [2022-12-13 17:27:49,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120930 states to 120930 states and 195135 transitions. [2022-12-13 17:27:49,912 INFO L78 Accepts]: Start accepts. Automaton has 120930 states and 195135 transitions. Word has length 90 [2022-12-13 17:27:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:49,912 INFO L495 AbstractCegarLoop]: Abstraction has 120930 states and 195135 transitions. [2022-12-13 17:27:49,913 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 17:27:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 120930 states and 195135 transitions. [2022-12-13 17:27:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 17:27:50,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:50,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-12-13 17:27:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:27:50,035 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2136531188, now seen corresponding path program 1 times [2022-12-13 17:27:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:50,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385837279] [2022-12-13 17:27:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:27:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:27:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:27:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:27:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:27:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:27:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:27:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:27:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:27:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:27:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 17:27:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:27:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:27:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 17:27:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:27:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 17:27:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 17:27:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385837279] [2022-12-13 17:27:50,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385837279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262727694] [2022-12-13 17:27:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:50,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:50,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:50,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:50,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:27:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:27:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:27:50,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:27:50,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262727694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:50,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:27:50,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-12-13 17:27:50,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447966675] [2022-12-13 17:27:50,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:50,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:27:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:27:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:27:50,242 INFO L87 Difference]: Start difference. First operand 120930 states and 195135 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 17:28:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:01,520 INFO L93 Difference]: Finished difference Result 123169 states and 197824 transitions. [2022-12-13 17:28:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:28:01,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-12-13 17:28:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:01,890 INFO L225 Difference]: With dead ends: 123169 [2022-12-13 17:28:01,891 INFO L226 Difference]: Without dead ends: 118141 [2022-12-13 17:28:01,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:28:01,952 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 33 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:01,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1936 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:28:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118141 states. [2022-12-13 17:28:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118141 to 117954. [2022-12-13 17:28:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117954 states, 103693 states have (on average 1.489290501769647) internal successors, (154429), 104868 states have internal predecessors, (154429), 8642 states have call successors, (8642), 4797 states have call predecessors, (8642), 5617 states have return successors, (28550), 8544 states have call predecessors, (28550), 8641 states have call successors, (28550) [2022-12-13 17:28:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117954 states to 117954 states and 191621 transitions. [2022-12-13 17:28:14,304 INFO L78 Accepts]: Start accepts. Automaton has 117954 states and 191621 transitions. Word has length 145 [2022-12-13 17:28:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 117954 states and 191621 transitions. [2022-12-13 17:28:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 17:28:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 117954 states and 191621 transitions. [2022-12-13 17:28:14,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 17:28:14,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:14,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-12-13 17:28:14,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:28:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 17:28:14,646 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2122113158, now seen corresponding path program 1 times [2022-12-13 17:28:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:14,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590739515] [2022-12-13 17:28:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:28:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:28:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:28:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:28:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:28:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:28:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:28:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:28:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 17:28:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 17:28:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 17:28:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:28:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:28:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 17:28:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 17:28:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 17:28:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-12-13 17:28:14,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:14,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590739515] [2022-12-13 17:28:14,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590739515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:14,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:14,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:28:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872527197] [2022-12-13 17:28:14,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:14,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:28:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:28:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:28:14,742 INFO L87 Difference]: Start difference. First operand 117954 states and 191621 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:28:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:26,315 INFO L93 Difference]: Finished difference Result 118006 states and 191675 transitions. [2022-12-13 17:28:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:28:26,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-12-13 17:28:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:26,678 INFO L225 Difference]: With dead ends: 118006 [2022-12-13 17:28:26,678 INFO L226 Difference]: Without dead ends: 117329 [2022-12-13 17:28:26,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:28:26,734 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 587 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:26,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 706 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:28:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117329 states. [2022-12-13 17:28:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117329 to 117280. [2022-12-13 17:28:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117280 states, 103168 states have (on average 1.490849875930521) internal successors, (153808), 104338 states have internal predecessors, (153808), 8570 states have call successors, (8570), 4737 states have call predecessors, (8570), 5540 states have return successors, (28447), 8460 states have call predecessors, (28447), 8569 states have call successors, (28447) [2022-12-13 17:28:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117280 states to 117280 states and 190825 transitions. [2022-12-13 17:28:39,134 INFO L78 Accepts]: Start accepts. Automaton has 117280 states and 190825 transitions. Word has length 147 [2022-12-13 17:28:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:39,135 INFO L495 AbstractCegarLoop]: Abstraction has 117280 states and 190825 transitions. [2022-12-13 17:28:39,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 17:28:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 117280 states and 190825 transitions. [2022-12-13 17:28:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 17:28:39,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:39,279 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 17:28:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:28:39,280 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -155876589, now seen corresponding path program 1 times [2022-12-13 17:28:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:39,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717454664] [2022-12-13 17:28:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:28:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:28:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:28:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:28:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:28:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:28:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 17:28:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:28:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:28:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:39,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717454664] [2022-12-13 17:28:39,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717454664] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:39,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287958082] [2022-12-13 17:28:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:39,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:39,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:39,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:39,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:28:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:39,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:28:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:39,538 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 17:28:39,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:39,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287958082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:39,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:39,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 17:28:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158012149] [2022-12-13 17:28:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:39,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:28:39,540 INFO L87 Difference]: Start difference. First operand 117280 states and 190825 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 17:29:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:29:02,577 INFO L93 Difference]: Finished difference Result 346319 states and 570146 transitions. [2022-12-13 17:29:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:29:02,578 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 17:29:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:29:03,332 INFO L225 Difference]: With dead ends: 346319 [2022-12-13 17:29:03,332 INFO L226 Difference]: Without dead ends: 230445 [2022-12-13 17:29:03,706 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 17:29:03,706 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 337 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 640 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 17:29:03,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 640 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:29:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230445 states. [2022-12-13 17:29:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230445 to 228899. [2022-12-13 17:29:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228899 states, 201337 states have (on average 1.4905159012004747) internal successors, (300096), 203662 states have internal predecessors, (300096), 16620 states have call successors, (16620), 9369 states have call predecessors, (16620), 10940 states have return successors, (55873), 16123 states have call predecessors, (55873), 16619 states have call successors, (55873) [2022-12-13 17:29:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228899 states to 228899 states and 372589 transitions. [2022-12-13 17:29:28,792 INFO L78 Accepts]: Start accepts. Automaton has 228899 states and 372589 transitions. Word has length 146 [2022-12-13 17:29:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:29:28,793 INFO L495 AbstractCegarLoop]: Abstraction has 228899 states and 372589 transitions. [2022-12-13 17:29:28,793 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 17:29:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 228899 states and 372589 transitions. [2022-12-13 17:29:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 17:29:29,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:29:29,082 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 17:29:29,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:29:29,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 17:29:29,284 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:29:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:29:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 263707443, now seen corresponding path program 1 times [2022-12-13 17:29:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:29:29,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165686533] [2022-12-13 17:29:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:29:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:29:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:29:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:29:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:29:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:29:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:29:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:29:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 17:29:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:29:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:29:29,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:29:29,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165686533] [2022-12-13 17:29:29,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165686533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:29:29,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369815781] [2022-12-13 17:29:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:29:29,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:29:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:29:29,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:29:29,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:29:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:29,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:29:29,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:29:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:29:29,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:29:29,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369815781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:29:29,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:29:29,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 17:29:29,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554182886] [2022-12-13 17:29:29,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:29:29,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:29:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:29:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:29:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:29:29,506 INFO L87 Difference]: Start difference. First operand 228899 states and 372589 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 17:30:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:15,870 INFO L93 Difference]: Finished difference Result 675732 states and 1110902 transitions. [2022-12-13 17:30:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:30:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 17:30:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:17,657 INFO L225 Difference]: With dead ends: 675732 [2022-12-13 17:30:17,657 INFO L226 Difference]: Without dead ends: 448239 [2022-12-13 17:30:18,192 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 17:30:18,192 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 331 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 641 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 17:30:18,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 641 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:30:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448239 states. [2022-12-13 17:31:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448239 to 445149. [2022-12-13 17:31:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445149 states, 392131 states have (on average 1.491368955782634) internal successors, (584812), 396766 states have internal predecessors, (584812), 31420 states have call successors, (31420), 18489 states have call predecessors, (31420), 21596 states have return successors, (108846), 30149 states have call predecessors, (108846), 31419 states have call successors, (108846) [2022-12-13 17:31:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445149 states to 445149 states and 725078 transitions. [2022-12-13 17:31:07,899 INFO L78 Accepts]: Start accepts. Automaton has 445149 states and 725078 transitions. Word has length 146 [2022-12-13 17:31:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:31:07,900 INFO L495 AbstractCegarLoop]: Abstraction has 445149 states and 725078 transitions. [2022-12-13 17:31:07,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 17:31:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 445149 states and 725078 transitions. [2022-12-13 17:31:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 17:31:08,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:31:08,537 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 17:31:08,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:31:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 17:31:08,739 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:31:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1323748179, now seen corresponding path program 1 times [2022-12-13 17:31:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:08,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92937054] [2022-12-13 17:31:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:31:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:31:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:31:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:31:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:31:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 17:31:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 17:31:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:31:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 17:31:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92937054] [2022-12-13 17:31:08,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92937054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595104908] [2022-12-13 17:31:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:08,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:08,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:08,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:31:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:08,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:31:08,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:08,953 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 17:31:08,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:31:08,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595104908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:31:08,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:31:08,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 17:31:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311182125] [2022-12-13 17:31:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:31:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:31:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:31:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:31:08,955 INFO L87 Difference]: Start difference. First operand 445149 states and 725078 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 17:32:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:43,073 INFO L93 Difference]: Finished difference Result 1316915 states and 2157085 transitions. [2022-12-13 17:32:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:32:43,074 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 17:32:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:45,172 INFO L225 Difference]: With dead ends: 1316915 [2022-12-13 17:32:45,173 INFO L226 Difference]: Without dead ends: 520017 [2022-12-13 17:32:46,867 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 17:32:46,868 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 234 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1020 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 17:32:46,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1020 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:32:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520017 states. [2022-12-13 17:33:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520017 to 520017. [2022-12-13 17:33:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520017 states, 458447 states have (on average 1.4896356612650972) internal successors, (682919), 463594 states have internal predecessors, (682919), 36412 states have call successors, (36412), 21537 states have call predecessors, (36412), 25156 states have return successors, (124486), 35141 states have call predecessors, (124486), 36411 states have call successors, (124486) [2022-12-13 17:33:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520017 states to 520017 states and 843817 transitions. [2022-12-13 17:33:47,701 INFO L78 Accepts]: Start accepts. Automaton has 520017 states and 843817 transitions. Word has length 146 [2022-12-13 17:33:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:33:47,702 INFO L495 AbstractCegarLoop]: Abstraction has 520017 states and 843817 transitions. [2022-12-13 17:33:47,702 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 17:33:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 520017 states and 843817 transitions. [2022-12-13 17:33:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 17:33:48,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:33:48,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:33:48,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 17:33:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:33:48,724 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:33:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:33:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 591939918, now seen corresponding path program 1 times [2022-12-13 17:33:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:33:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632218911] [2022-12-13 17:33:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:33:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:33:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:33:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:33:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:33:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:33:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:33:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:33:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:33:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:33:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 17:33:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:33:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 17:33:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:33:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:33:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 17:33:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 17:33:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 17:33:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-13 17:33:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:33:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632218911] [2022-12-13 17:33:48,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632218911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:33:48,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:33:48,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:33:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974634825] [2022-12-13 17:33:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:33:48,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:33:48,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:33:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:33:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:33:48,831 INFO L87 Difference]: Start difference. First operand 520017 states and 843817 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 17:34:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:34:42,126 INFO L93 Difference]: Finished difference Result 521357 states and 845400 transitions. [2022-12-13 17:34:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:34:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 162 [2022-12-13 17:34:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:34:44,114 INFO L225 Difference]: With dead ends: 521357 [2022-12-13 17:34:44,114 INFO L226 Difference]: Without dead ends: 520132 [2022-12-13 17:34:44,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:34:44,319 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 598 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:34:44,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 950 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 17:34:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520132 states. [2022-12-13 17:35:39,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520132 to 520023. [2022-12-13 17:35:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520023 states, 458451 states have (on average 1.489633570436099) internal successors, (682924), 463598 states have internal predecessors, (682924), 36413 states have call successors, (36413), 21538 states have call predecessors, (36413), 25157 states have return successors, (124488), 35142 states have call predecessors, (124488), 36412 states have call successors, (124488) [2022-12-13 17:35:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520023 states to 520023 states and 843825 transitions. [2022-12-13 17:35:42,332 INFO L78 Accepts]: Start accepts. Automaton has 520023 states and 843825 transitions. Word has length 162 [2022-12-13 17:35:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:35:42,332 INFO L495 AbstractCegarLoop]: Abstraction has 520023 states and 843825 transitions. [2022-12-13 17:35:42,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 17:35:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 520023 states and 843825 transitions. [2022-12-13 17:35:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 17:35:42,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:35:42,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 17:35:42,958 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:35:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1323907344, now seen corresponding path program 1 times [2022-12-13 17:35:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:42,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287318760] [2022-12-13 17:35:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:35:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:35:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 17:35:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:35:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:35:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 17:35:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:35:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:35:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 17:35:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:35:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 17:35:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:35:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:35:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 17:35:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 17:35:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 17:35:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 17:35:43,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:43,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287318760] [2022-12-13 17:35:43,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287318760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:35:43,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965791895] [2022-12-13 17:35:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:43,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:35:43,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:35:43,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:35:43,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73541a77-27d2-4b68-9c0f-9f546bffe360/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:35:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:43,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 17:35:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:35:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 17:35:43,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:35:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-13 17:35:43,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965791895] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:35:43,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:35:43,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-12-13 17:35:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286733328] [2022-12-13 17:35:43,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:35:43,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:35:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:35:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:35:43,534 INFO L87 Difference]: Start difference. First operand 520023 states and 843825 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-12-13 17:36:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:37,451 INFO L93 Difference]: Finished difference Result 521691 states and 845873 transitions. [2022-12-13 17:36:37,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:36:37,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-12-13 17:36:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:39,394 INFO L225 Difference]: With dead ends: 521691 [2022-12-13 17:36:39,394 INFO L226 Difference]: Without dead ends: 520236 [2022-12-13 17:36:39,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 17:36:39,615 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1294 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:39,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1750 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:36:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520236 states.