./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc --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 a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 --- 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-5e519f3 [2022-11-02 21:01:30,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:30,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:30,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:30,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:30,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:30,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:30,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:30,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:30,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:30,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:30,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:30,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:30,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:30,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:30,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:30,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:30,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:30,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:30,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:30,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:30,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:30,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:30,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:30,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:30,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:30,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:30,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:30,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:30,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:30,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:30,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:30,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:30,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:30,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:30,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:30,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:30,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:30,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:30,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:30,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:30,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:01:30,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:30,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:30,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:30,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:30,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:30,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:30,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:30,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:30,505 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:30,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:30,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:30,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:30,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:30,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:30,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:30,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:30,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:30,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:30,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:30,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:30,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:30,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:30,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:30,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:30,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:30,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:30,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:30,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:30,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:30,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:30,511 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:30,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:30,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:30,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6baa92d18991a792383fc99c5c300f37f700ba00714b15a3dbe7d2191a67ca9 [2022-11-02 21:01:30,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:30,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:30,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:30,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:30,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:30,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2022-11-02 21:01:31,079 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/data/5575a3f92/51e05e415eeb4fa99de6a4c70ac30d07/FLAGd5c4c5b27 [2022-11-02 21:01:31,777 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:31,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/sv-benchmarks/c/systemc/token_ring.07.cil-1.c [2022-11-02 21:01:31,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/data/5575a3f92/51e05e415eeb4fa99de6a4c70ac30d07/FLAGd5c4c5b27 [2022-11-02 21:01:32,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/data/5575a3f92/51e05e415eeb4fa99de6a4c70ac30d07 [2022-11-02 21:01:32,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:32,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:32,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:32,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:32,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:32,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bb8ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32, skipping insertion in model container [2022-11-02 21:01:32,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:32,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:32,366 WARN L230 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_0cb19c10-cc13-412e-b8c2-7fd29881a494/sv-benchmarks/c/systemc/token_ring.07.cil-1.c[671,684] [2022-11-02 21:01:32,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:32,499 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:32,514 WARN L230 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_0cb19c10-cc13-412e-b8c2-7fd29881a494/sv-benchmarks/c/systemc/token_ring.07.cil-1.c[671,684] [2022-11-02 21:01:32,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:32,598 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:32,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32 WrapperNode [2022-11-02 21:01:32,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:32,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:32,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:32,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:32,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,686 INFO L138 Inliner]: procedures = 42, calls = 52, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 563 [2022-11-02 21:01:32,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:32,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:32,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:32,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:32,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:32,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:32,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:32,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:32,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (1/1) ... [2022-11-02 21:01:32,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:32,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:32,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb19c10-cc13-412e-b8c2-7fd29881a494/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:01:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:01:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:01:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:01:32,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:01:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:01:32,906 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:01:32,911 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:01:32,912 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:01:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:01:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:01:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:01:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:01:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:01:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:33,093 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:33,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:34,094 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:34,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:34,118 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-02 21:01:34,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:34 BoogieIcfgContainer [2022-11-02 21:01:34,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:34,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:34,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:34,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:34,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:32" (1/3) ... [2022-11-02 21:01:34,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752408e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:34, skipping insertion in model container [2022-11-02 21:01:34,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:32" (2/3) ... [2022-11-02 21:01:34,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752408e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:34, skipping insertion in model container [2022-11-02 21:01:34,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:34" (3/3) ... [2022-11-02 21:01:34,141 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-1.c [2022-11-02 21:01:34,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:34,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:34,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:34,256 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;@5702d4f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:34,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-02 21:01:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:34,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:34,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:34,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1244589581, now seen corresponding path program 1 times [2022-11-02 21:01:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:34,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782390484] [2022-11-02 21:01:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:34,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:35,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782390484] [2022-11-02 21:01:35,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782390484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:35,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:35,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:35,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244024174] [2022-11-02 21:01:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:01:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:01:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:35,124 INFO L87 Difference]: Start difference. First operand has 257 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 230 states have internal predecessors, (374), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:36,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:36,865 INFO L93 Difference]: Finished difference Result 592 states and 969 transitions. [2022-11-02 21:01:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2022-11-02 21:01:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:36,887 INFO L225 Difference]: With dead ends: 592 [2022-11-02 21:01:36,887 INFO L226 Difference]: Without dead ends: 339 [2022-11-02 21:01:36,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:36,898 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 657 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:36,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 697 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:01:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-02 21:01:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 252. [2022-11-02 21:01:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 224 states have (on average 1.5491071428571428) internal successors, (347), 225 states have internal predecessors, (347), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-02 21:01:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 389 transitions. [2022-11-02 21:01:37,023 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 389 transitions. Word has length 122 [2022-11-02 21:01:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:37,024 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 389 transitions. [2022-11-02 21:01:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:01:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 389 transitions. [2022-11-02 21:01:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:37,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:37,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:01:37,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -482555381, now seen corresponding path program 1 times [2022-11-02 21:01:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:37,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303994273] [2022-11-02 21:01:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303994273] [2022-11-02 21:01:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303994273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:37,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:37,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139583313] [2022-11-02 21:01:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:37,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:37,573 INFO L87 Difference]: Start difference. First operand 252 states and 389 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-11-02 21:01:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:40,339 INFO L93 Difference]: Finished difference Result 908 states and 1436 transitions. [2022-11-02 21:01:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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 122 [2022-11-02 21:01:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:40,352 INFO L225 Difference]: With dead ends: 908 [2022-11-02 21:01:40,352 INFO L226 Difference]: Without dead ends: 671 [2022-11-02 21:01:40,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:40,369 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 981 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:40,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1085 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:01:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-02 21:01:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 498. [2022-11-02 21:01:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 447 states have (on average 1.5615212527964206) internal successors, (698), 449 states have internal predecessors, (698), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-11-02 21:01:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 775 transitions. [2022-11-02 21:01:40,515 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 775 transitions. Word has length 122 [2022-11-02 21:01:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:40,518 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 775 transitions. [2022-11-02 21:01:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 4 states have internal predecessors, (112), 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) [2022-11-02 21:01:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 775 transitions. [2022-11-02 21:01:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:40,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:40,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:40,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:01:40,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1208119409, now seen corresponding path program 1 times [2022-11-02 21:01:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:40,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459741308] [2022-11-02 21:01:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:40,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:40,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459741308] [2022-11-02 21:01:40,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459741308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:40,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:40,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884355756] [2022-11-02 21:01:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:41,002 INFO L87 Difference]: Start difference. First operand 498 states and 775 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:44,590 INFO L93 Difference]: Finished difference Result 1498 states and 2371 transitions. [2022-11-02 21:01:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:01:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:44,599 INFO L225 Difference]: With dead ends: 1498 [2022-11-02 21:01:44,599 INFO L226 Difference]: Without dead ends: 1015 [2022-11-02 21:01:44,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:44,603 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 994 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:44,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1875 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 21:01:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-11-02 21:01:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 728. [2022-11-02 21:01:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 654 states have (on average 1.555045871559633) internal successors, (1017), 657 states have internal predecessors, (1017), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-02 21:01:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1128 transitions. [2022-11-02 21:01:44,713 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1128 transitions. Word has length 122 [2022-11-02 21:01:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:44,714 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1128 transitions. [2022-11-02 21:01:44,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1128 transitions. [2022-11-02 21:01:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:44,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:44,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:01:44,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1053453841, now seen corresponding path program 1 times [2022-11-02 21:01:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:44,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566937289] [2022-11-02 21:01:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:44,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:45,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566937289] [2022-11-02 21:01:45,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566937289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:45,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:45,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:45,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455623881] [2022-11-02 21:01:45,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:45,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:45,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:45,035 INFO L87 Difference]: Start difference. First operand 728 states and 1128 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:48,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:48,387 INFO L93 Difference]: Finished difference Result 2365 states and 3732 transitions. [2022-11-02 21:01:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:48,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:01:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:48,403 INFO L225 Difference]: With dead ends: 2365 [2022-11-02 21:01:48,403 INFO L226 Difference]: Without dead ends: 1652 [2022-11-02 21:01:48,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:48,419 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 990 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:48,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1868 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 21:01:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-11-02 21:01:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1191. [2022-11-02 21:01:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1071 states have (on average 1.549953314659197) internal successors, (1660), 1076 states have internal predecessors, (1660), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-11-02 21:01:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1843 transitions. [2022-11-02 21:01:48,591 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1843 transitions. Word has length 122 [2022-11-02 21:01:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:48,592 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1843 transitions. [2022-11-02 21:01:48,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1843 transitions. [2022-11-02 21:01:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:48,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:48,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:01:48,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash -813254833, now seen corresponding path program 1 times [2022-11-02 21:01:48,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:48,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082687546] [2022-11-02 21:01:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:48,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:48,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082687546] [2022-11-02 21:01:48,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082687546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:48,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:48,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894796164] [2022-11-02 21:01:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:48,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:48,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:48,846 INFO L87 Difference]: Start difference. First operand 1191 states and 1843 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:52,322 INFO L93 Difference]: Finished difference Result 4042 states and 6355 transitions. [2022-11-02 21:01:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:01:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:52,345 INFO L225 Difference]: With dead ends: 4042 [2022-11-02 21:01:52,345 INFO L226 Difference]: Without dead ends: 2866 [2022-11-02 21:01:52,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:52,356 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 989 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:52,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1863 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 21:01:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-11-02 21:01:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2120. [2022-11-02 21:01:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 1908 states have (on average 1.5461215932914045) internal successors, (2950), 1917 states have internal predecessors, (2950), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-11-02 21:01:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3283 transitions. [2022-11-02 21:01:52,703 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3283 transitions. Word has length 122 [2022-11-02 21:01:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:52,703 INFO L495 AbstractCegarLoop]: Abstraction has 2120 states and 3283 transitions. [2022-11-02 21:01:52,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3283 transitions. [2022-11-02 21:01:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:52,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:52,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:52,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:01:52,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2120397231, now seen corresponding path program 1 times [2022-11-02 21:01:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:52,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870353411] [2022-11-02 21:01:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:53,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:53,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870353411] [2022-11-02 21:01:53,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870353411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:53,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:53,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88598338] [2022-11-02 21:01:53,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:53,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:53,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:53,005 INFO L87 Difference]: Start difference. First operand 2120 states and 3283 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:56,180 INFO L93 Difference]: Finished difference Result 7397 states and 11621 transitions. [2022-11-02 21:01:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:56,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:01:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:56,209 INFO L225 Difference]: With dead ends: 7397 [2022-11-02 21:01:56,209 INFO L226 Difference]: Without dead ends: 5292 [2022-11-02 21:01:56,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:56,218 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 988 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:56,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1858 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:01:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-11-02 21:01:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 3985. [2022-11-02 21:01:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 3589 states have (on average 1.5436054611312344) internal successors, (5540), 3606 states have internal predecessors, (5540), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-11-02 21:01:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 6191 transitions. [2022-11-02 21:01:56,691 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 6191 transitions. Word has length 122 [2022-11-02 21:01:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:56,691 INFO L495 AbstractCegarLoop]: Abstraction has 3985 states and 6191 transitions. [2022-11-02 21:01:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:01:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 6191 transitions. [2022-11-02 21:01:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:01:56,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:56,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:56,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:01:56,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash -222900465, now seen corresponding path program 1 times [2022-11-02 21:01:56,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:56,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769203245] [2022-11-02 21:01:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:56,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:01:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:01:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:01:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:01:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:01:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:56,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769203245] [2022-11-02 21:01:56,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769203245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:56,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:56,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357054007] [2022-11-02 21:01:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:56,897 INFO L87 Difference]: Start difference. First operand 3985 states and 6191 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:00,383 INFO L93 Difference]: Finished difference Result 14108 states and 22215 transitions. [2022-11-02 21:02:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:02:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:02:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:00,431 INFO L225 Difference]: With dead ends: 14108 [2022-11-02 21:02:00,432 INFO L226 Difference]: Without dead ends: 10138 [2022-11-02 21:02:00,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:02:00,450 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1046 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:00,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1271 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:02:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2022-11-02 21:02:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 7730. [2022-11-02 21:02:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7730 states, 6966 states have (on average 1.5420614412862474) internal successors, (10742), 6999 states have internal predecessors, (10742), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-11-02 21:02:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12083 transitions. [2022-11-02 21:02:01,551 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 12083 transitions. Word has length 122 [2022-11-02 21:02:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:01,552 INFO L495 AbstractCegarLoop]: Abstraction has 7730 states and 12083 transitions. [2022-11-02 21:02:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 12083 transitions. [2022-11-02 21:02:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:02:01,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:01,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:02:01,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 808140433, now seen corresponding path program 1 times [2022-11-02 21:02:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:01,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715084360] [2022-11-02 21:02:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:01,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:02:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:02:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:02:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:02:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:02:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:01,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715084360] [2022-11-02 21:02:01,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715084360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:01,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:01,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:01,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285121695] [2022-11-02 21:02:01,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:01,818 INFO L87 Difference]: Start difference. First operand 7730 states and 12083 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:07,134 INFO L93 Difference]: Finished difference Result 27531 states and 43597 transitions. [2022-11-02 21:02:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:02:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:02:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:07,223 INFO L225 Difference]: With dead ends: 27531 [2022-11-02 21:02:07,223 INFO L226 Difference]: Without dead ends: 19816 [2022-11-02 21:02:07,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:02:07,261 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 986 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:07,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1848 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 21:02:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19816 states. [2022-11-02 21:02:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19816 to 15251. [2022-11-02 21:02:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15251 states, 13751 states have (on average 1.5411242818704094) internal successors, (21192), 13816 states have internal predecessors, (21192), 1045 states have call successors, (1045), 390 states have call predecessors, (1045), 454 states have return successors, (1838), 1108 states have call predecessors, (1838), 1045 states have call successors, (1838) [2022-11-02 21:02:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15251 states to 15251 states and 24075 transitions. [2022-11-02 21:02:09,266 INFO L78 Accepts]: Start accepts. Automaton has 15251 states and 24075 transitions. Word has length 122 [2022-11-02 21:02:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:09,267 INFO L495 AbstractCegarLoop]: Abstraction has 15251 states and 24075 transitions. [2022-11-02 21:02:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15251 states and 24075 transitions. [2022-11-02 21:02:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:02:09,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:09,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:02:09,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1098262833, now seen corresponding path program 1 times [2022-11-02 21:02:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:09,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715863211] [2022-11-02 21:02:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:02:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:02:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:02:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:02:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:02:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:09,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715863211] [2022-11-02 21:02:09,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715863211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:09,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:09,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:09,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681225972] [2022-11-02 21:02:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:09,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:09,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:09,575 INFO L87 Difference]: Start difference. First operand 15251 states and 24075 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:19,205 INFO L93 Difference]: Finished difference Result 61226 states and 97333 transitions. [2022-11-02 21:02:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:02:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:02:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:19,430 INFO L225 Difference]: With dead ends: 61226 [2022-11-02 21:02:19,430 INFO L226 Difference]: Without dead ends: 45990 [2022-11-02 21:02:19,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:02:19,505 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 1279 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:19,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1831 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 21:02:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45990 states. [2022-11-02 21:02:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45990 to 30164. [2022-11-02 21:02:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30164 states, 27256 states have (on average 1.5430730848253595) internal successors, (42058), 27385 states have internal predecessors, (42058), 2005 states have call successors, (2005), 774 states have call predecessors, (2005), 902 states have return successors, (4320), 2132 states have call predecessors, (4320), 2005 states have call successors, (4320) [2022-11-02 21:02:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30164 states to 30164 states and 48383 transitions. [2022-11-02 21:02:23,833 INFO L78 Accepts]: Start accepts. Automaton has 30164 states and 48383 transitions. Word has length 122 [2022-11-02 21:02:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:23,834 INFO L495 AbstractCegarLoop]: Abstraction has 30164 states and 48383 transitions. [2022-11-02 21:02:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 30164 states and 48383 transitions. [2022-11-02 21:02:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:02:23,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:23,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:23,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:02:23,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash 502808273, now seen corresponding path program 1 times [2022-11-02 21:02:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:23,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167243182] [2022-11-02 21:02:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:02:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:02:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:02:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:02:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:02:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:24,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167243182] [2022-11-02 21:02:24,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167243182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:24,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:24,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900391034] [2022-11-02 21:02:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:24,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:24,086 INFO L87 Difference]: Start difference. First operand 30164 states and 48383 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:38,571 INFO L93 Difference]: Finished difference Result 117863 states and 190391 transitions. [2022-11-02 21:02:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:02:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 122 [2022-11-02 21:02:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:38,974 INFO L225 Difference]: With dead ends: 117863 [2022-11-02 21:02:38,974 INFO L226 Difference]: Without dead ends: 87714 [2022-11-02 21:02:39,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:02:39,076 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1196 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:39,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1822 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 21:02:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87714 states. [2022-11-02 21:02:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87714 to 60054. [2022-11-02 21:02:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60054 states, 54394 states have (on average 1.5463102548075156) internal successors, (84110), 54651 states have internal predecessors, (84110), 3861 states have call successors, (3861), 1542 states have call predecessors, (3861), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2022-11-02 21:02:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60054 states to 60054 states and 98649 transitions. [2022-11-02 21:02:47,575 INFO L78 Accepts]: Start accepts. Automaton has 60054 states and 98649 transitions. Word has length 122 [2022-11-02 21:02:47,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:47,576 INFO L495 AbstractCegarLoop]: Abstraction has 60054 states and 98649 transitions. [2022-11-02 21:02:47,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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) [2022-11-02 21:02:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 60054 states and 98649 transitions. [2022-11-02 21:02:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-02 21:02:47,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:47,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:47,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:02:47,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1854193491, now seen corresponding path program 1 times [2022-11-02 21:02:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:47,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883565695] [2022-11-02 21:02:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:02:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:02:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:02:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:02:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 21:02:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:47,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:47,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883565695] [2022-11-02 21:02:47,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883565695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:47,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:47,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:02:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165777438] [2022-11-02 21:02:47,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:02:47,830 INFO L87 Difference]: Start difference. First operand 60054 states and 98649 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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)