./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:41:19,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:41:19,762 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:41:19,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:41:19,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:41:19,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:41:19,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:41:19,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:41:19,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:41:19,808 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:41:19,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:41:19,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:41:19,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:41:19,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:41:19,816 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:41:19,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:41:19,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:41:19,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:41:19,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:41:19,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:41:19,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:41:19,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:41:19,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:41:19,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:41:19,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:41:19,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:41:19,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:41:19,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:41:19,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:41:19,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:41:19,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:41:19,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:19,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:41:19,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:41:19,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:41:19,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:41:19,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:41:19,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:41:19,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:41:19,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:41:19,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:41:19,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:41:19,829 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a [2023-11-23 22:41:20,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:41:20,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:41:20,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:41:20,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:41:20,165 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:41:20,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2023-11-23 22:41:23,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:24,031 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:24,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2023-11-23 22:41:24,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/data/cde929c49/bf374f341b0644179582b939faed4e9b/FLAGd72bce1bc [2023-11-23 22:41:24,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/data/cde929c49/bf374f341b0644179582b939faed4e9b [2023-11-23 22:41:24,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:24,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:24,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:24,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:24,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:24,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:24" (1/1) ... [2023-11-23 22:41:24,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd18e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:24, skipping insertion in model container [2023-11-23 22:41:24,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:24" (1/1) ... [2023-11-23 22:41:24,311 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:24,683 WARN L240 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_c8d024f8-5e60-4950-95d2-05df7e6cfe83/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2023-11-23 22:41:26,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:26,122 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:41:26,159 WARN L240 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_c8d024f8-5e60-4950-95d2-05df7e6cfe83/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2023-11-23 22:41:26,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:26,851 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:41:26,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26 WrapperNode [2023-11-23 22:41:26,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:26,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:26,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:41:26,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:41:26,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:26,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:27,609 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-23 22:41:27,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:27,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:41:27,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:41:27,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:41:27,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:27,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:27,770 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:27,954 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:41:27,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:27,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:41:28,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:41:28,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:41:28,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:41:28,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (1/1) ... [2023-11-23 22:41:28,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:41:28,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:41:28,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8d024f8-5e60-4950-95d2-05df7e6cfe83/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:41:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:41:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:41:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:41:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:41:28,688 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:41:28,690 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:41:35,454 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:41:35,530 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:41:35,531 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:41:35,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:35 BoogieIcfgContainer [2023-11-23 22:41:35,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:41:35,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:41:35,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:41:35,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:41:35,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:41:24" (1/3) ... [2023-11-23 22:41:35,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd610cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:35, skipping insertion in model container [2023-11-23 22:41:35,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:26" (2/3) ... [2023-11-23 22:41:35,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd610cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:35, skipping insertion in model container [2023-11-23 22:41:35,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:35" (3/3) ... [2023-11-23 22:41:35,544 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2023-11-23 22:41:35,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:41:35,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:41:35,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:41:35,679 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=LoopHeads, 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;@a0b2d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:41:35,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:41:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 22:41:35,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:35,704 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] [2023-11-23 22:41:35,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:35,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1793786924, now seen corresponding path program 1 times [2023-11-23 22:41:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910421891] [2023-11-23 22:41:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:35,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:35,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910421891] [2023-11-23 22:41:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910421891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:35,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151638150] [2023-11-23 22:41:35,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:35,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:41:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:41:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:41:35,968 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:36,121 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-11-23 22:41:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:41:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 22:41:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:36,151 INFO L225 Difference]: With dead ends: 2071 [2023-11-23 22:41:36,151 INFO L226 Difference]: Without dead ends: 1034 [2023-11-23 22:41:36,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:41:36,165 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:36,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:41:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-23 22:41:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-11-23 22:41:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-11-23 22:41:36,312 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 25 [2023-11-23 22:41:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:36,312 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-11-23 22:41:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-11-23 22:41:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 22:41:36,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:36,316 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] [2023-11-23 22:41:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:41:36,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:36,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -958275933, now seen corresponding path program 1 times [2023-11-23 22:41:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77431245] [2023-11-23 22:41:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77431245] [2023-11-23 22:41:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77431245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:36,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:36,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057403944] [2023-11-23 22:41:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:36,533 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:42,652 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-11-23 22:41:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-23 22:41:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:42,669 INFO L225 Difference]: With dead ends: 3015 [2023-11-23 22:41:42,669 INFO L226 Difference]: Without dead ends: 1982 [2023-11-23 22:41:42,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:42,674 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1029 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:42,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 22:41:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-11-23 22:41:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-11-23 22:41:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-11-23 22:41:42,758 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 25 [2023-11-23 22:41:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:42,759 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-11-23 22:41:42,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-11-23 22:41:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 22:41:42,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:42,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:42,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:41:42,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:42,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1039564231, now seen corresponding path program 1 times [2023-11-23 22:41:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119678485] [2023-11-23 22:41:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119678485] [2023-11-23 22:41:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119678485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:43,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378792223] [2023-11-23 22:41:43,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:43,232 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:47,772 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-11-23 22:41:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-23 22:41:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:47,795 INFO L225 Difference]: With dead ends: 5455 [2023-11-23 22:41:47,795 INFO L226 Difference]: Without dead ends: 3527 [2023-11-23 22:41:47,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:47,801 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-23 22:41:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-11-23 22:41:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-11-23 22:41:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-11-23 22:41:47,993 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 90 [2023-11-23 22:41:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:47,993 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-11-23 22:41:47,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-11-23 22:41:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 22:41:47,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:47,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:41:47,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:48,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash 476056650, now seen corresponding path program 1 times [2023-11-23 22:41:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465249726] [2023-11-23 22:41:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:48,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:48,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465249726] [2023-11-23 22:41:48,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465249726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:48,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607017405] [2023-11-23 22:41:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:48,261 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:52,446 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-11-23 22:41:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-11-23 22:41:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:52,485 INFO L225 Difference]: With dead ends: 10231 [2023-11-23 22:41:52,486 INFO L226 Difference]: Without dead ends: 6707 [2023-11-23 22:41:52,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:52,494 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:52,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-23 22:41:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-11-23 22:41:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-11-23 22:41:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-11-23 22:41:52,669 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 96 [2023-11-23 22:41:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:52,671 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-11-23 22:41:52,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-11-23 22:41:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 22:41:52,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:52,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:52,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:41:52,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2026593951, now seen corresponding path program 1 times [2023-11-23 22:41:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359547271] [2023-11-23 22:41:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359547271] [2023-11-23 22:41:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359547271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075252896] [2023-11-23 22:41:52,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:52,972 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:57,757 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-11-23 22:41:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:41:57,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-11-23 22:41:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:57,818 INFO L225 Difference]: With dead ends: 17442 [2023-11-23 22:41:57,818 INFO L226 Difference]: Without dead ends: 10744 [2023-11-23 22:41:57,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:57,830 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:57,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-23 22:41:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-11-23 22:41:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-11-23 22:41:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-11-23 22:41:58,117 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 126 [2023-11-23 22:41:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:58,119 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-11-23 22:41:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-11-23 22:41:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 22:41:58,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:58,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:41:58,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:58,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -392300826, now seen corresponding path program 1 times [2023-11-23 22:41:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:58,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501827114] [2023-11-23 22:41:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:58,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501827114] [2023-11-23 22:41:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501827114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:58,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:58,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:41:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441704663] [2023-11-23 22:41:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:58,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:41:58,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:41:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:41:58,594 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:02,123 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-11-23 22:42:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:02,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-11-23 22:42:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:02,157 INFO L225 Difference]: With dead ends: 20548 [2023-11-23 22:42:02,158 INFO L226 Difference]: Without dead ends: 10668 [2023-11-23 22:42:02,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:02,171 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:02,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 22:42:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-11-23 22:42:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-11-23 22:42:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-11-23 22:42:02,546 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 136 [2023-11-23 22:42:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:02,555 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-11-23 22:42:02,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-11-23 22:42:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 22:42:02,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:02,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:42:02,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:42:02,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997892, now seen corresponding path program 1 times [2023-11-23 22:42:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910303175] [2023-11-23 22:42:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 22:42:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910303175] [2023-11-23 22:42:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910303175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:02,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:42:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193907231] [2023-11-23 22:42:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:02,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:02,791 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:07,246 INFO L93 Difference]: Finished difference Result 30030 states and 41216 transitions. [2023-11-23 22:42:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-11-23 22:42:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:07,293 INFO L225 Difference]: With dead ends: 30030 [2023-11-23 22:42:07,293 INFO L226 Difference]: Without dead ends: 20150 [2023-11-23 22:42:07,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:07,307 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:07,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1219 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 22:42:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2023-11-23 22:42:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 19336. [2023-11-23 22:42:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19336 states, 19335 states have (on average 1.2424618567364882) internal successors, (24023), 19335 states have internal predecessors, (24023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 24023 transitions. [2023-11-23 22:42:07,634 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 24023 transitions. Word has length 150 [2023-11-23 22:42:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:07,634 INFO L495 AbstractCegarLoop]: Abstraction has 19336 states and 24023 transitions. [2023-11-23 22:42:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 24023 transitions. [2023-11-23 22:42:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-23 22:42:07,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:07,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:07,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:42:07,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:42:07,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1024775160, now seen corresponding path program 1 times [2023-11-23 22:42:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622292161] [2023-11-23 22:42:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 22:42:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622292161] [2023-11-23 22:42:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622292161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:42:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348657111] [2023-11-23 22:42:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:08,089 INFO L87 Difference]: Start difference. First operand 19336 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:42:12,352 INFO L93 Difference]: Finished difference Result 44988 states and 55627 transitions. [2023-11-23 22:42:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:42:12,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-11-23 22:42:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:42:12,419 INFO L225 Difference]: With dead ends: 44988 [2023-11-23 22:42:12,419 INFO L226 Difference]: Without dead ends: 26440 [2023-11-23 22:42:12,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:12,440 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:42:12,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 22:42:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2023-11-23 22:42:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2023-11-23 22:42:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.2005901937046004) internal successors, (31734), 26432 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31734 transitions. [2023-11-23 22:42:12,866 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31734 transitions. Word has length 237 [2023-11-23 22:42:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:42:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 26433 states and 31734 transitions. [2023-11-23 22:42:12,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:42:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31734 transitions. [2023-11-23 22:42:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-23 22:42:12,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:42:12,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:42:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:42:12,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:42:12,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:42:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1412759620, now seen corresponding path program 1 times [2023-11-23 22:42:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:42:12,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026610872] [2023-11-23 22:42:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:42:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:42:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:42:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:42:13,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:42:13,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026610872] [2023-11-23 22:42:13,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026610872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:42:13,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:42:13,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:42:13,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496015525] [2023-11-23 22:42:13,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:42:13,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:42:13,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:42:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:42:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:42:13,082 INFO L87 Difference]: Start difference. First operand 26433 states and 31734 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)