./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R --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 d4567c6a74ac7eac1fa65db4db5999d3a1dd022fa97829ecd98c8e766f1d922f --- 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-38b53e6 [2022-11-25 17:56:04,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:56:04,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:56:04,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:56:04,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:56:04,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:56:04,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:56:04,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:56:04,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:56:04,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:56:04,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:56:04,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:56:04,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:56:04,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:56:04,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:56:04,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:56:04,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:56:04,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:56:05,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:56:05,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:56:05,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:56:05,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:56:05,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:56:05,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:56:05,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:56:05,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:56:05,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:56:05,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:56:05,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:56:05,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:56:05,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:56:05,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:56:05,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:56:05,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:56:05,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:56:05,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:56:05,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:56:05,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:56:05,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:56:05,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:56:05,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:56:05,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:56:05,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:56:05,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:56:05,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:56:05,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:56:05,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:56:05,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:56:05,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:56:05,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:56:05,088 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:56:05,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:56:05,089 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:56:05,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:56:05,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:56:05,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:56:05,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:56:05,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:56:05,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:56:05,091 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:56:05,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:56:05,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:56:05,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:56:05,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:56:05,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:56:05,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:56:05,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:05,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:56:05,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:56:05,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:56:05,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:56:05,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:56:05,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:56:05,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:56:05,095 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:56:05,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:56:05,095 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4567c6a74ac7eac1fa65db4db5999d3a1dd022fa97829ecd98c8e766f1d922f [2022-11-25 17:56:05,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:56:05,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:56:05,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:56:05,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:56:05,416 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:56:05,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c [2022-11-25 17:56:08,461 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:56:09,312 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:56:09,312 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c [2022-11-25 17:56:09,376 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/data/f63921630/1c99a0ec12cf40afaccc60bf28be5746/FLAG07e015096 [2022-11-25 17:56:09,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/data/f63921630/1c99a0ec12cf40afaccc60bf28be5746 [2022-11-25 17:56:09,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:56:09,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:56:09,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:09,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:56:09,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:56:09,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:09" (1/1) ... [2022-11-25 17:56:09,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3400d162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:09, skipping insertion in model container [2022-11-25 17:56:09,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:56:09" (1/1) ... [2022-11-25 17:56:09,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:56:09,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:56:12,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c[377612,377625] [2022-11-25 17:56:12,140 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c[383339,383352] [2022-11-25 17:56:12,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:12,416 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:56:13,646 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c[377612,377625] [2022-11-25 17:56:13,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/sv-benchmarks/c/combinations/Problem05_label47+token_ring.08.cil-1.c[383339,383352] [2022-11-25 17:56:13,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:56:13,746 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:56:13,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13 WrapperNode [2022-11-25 17:56:13,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:56:13,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:13,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:56:13,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:56:13,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:13,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,388 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-11-25 17:56:14,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:56:14,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:56:14,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:56:14,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:56:14,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,897 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:56:14,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:56:14,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:56:14,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:56:14,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (1/1) ... [2022-11-25 17:56:14,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:56:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:56:15,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:56:15,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0ada77-e4ad-4865-bc07-454c24b55d4f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:56:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:56:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 17:56:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 17:56:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 17:56:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 17:56:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 17:56:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 17:56:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 17:56:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 17:56:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 17:56:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 17:56:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 17:56:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 17:56:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:56:15,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:56:15,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:56:15,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:56:15,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:56:24,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:56:24,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:56:24,359 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-25 17:56:24,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:24 BoogieIcfgContainer [2022-11-25 17:56:24,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:56:24,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:56:24,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:56:24,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:56:24,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:56:09" (1/3) ... [2022-11-25 17:56:24,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf511b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:24, skipping insertion in model container [2022-11-25 17:56:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:13" (2/3) ... [2022-11-25 17:56:24,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf511b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:56:24, skipping insertion in model container [2022-11-25 17:56:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:56:24" (3/3) ... [2022-11-25 17:56:24,374 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.08.cil-1.c [2022-11-25 17:56:24,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:56:24,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:56:24,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:56:24,506 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;@5525ef11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:56:24,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:56:24,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-25 17:56:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:24,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:24,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:24,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-11-25 17:56:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:24,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731493975] [2022-11-25 17:56:24,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:24,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:25,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731493975] [2022-11-25 17:56:25,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731493975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:25,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:25,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:56:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602418595] [2022-11-25 17:56:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:25,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:56:25,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:56:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:56:25,249 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-25 17:56:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:27,021 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-11-25 17:56:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:56:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:27,069 INFO L225 Difference]: With dead ends: 5022 [2022-11-25 17:56:27,069 INFO L226 Difference]: Without dead ends: 2496 [2022-11-25 17:56:27,086 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 [2022-11-25 17:56:27,091 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 738 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 16643 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:27,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 16643 Invalid, 776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 17:56:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-11-25 17:56:27,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-11-25 17:56:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-25 17:56:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-11-25 17:56:27,285 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-11-25 17:56:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:27,286 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-11-25 17:56:27,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-25 17:56:27,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-11-25 17:56:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:27,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:27,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:27,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:56:27,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-11-25 17:56:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:27,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836298536] [2022-11-25 17:56:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:27,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836298536] [2022-11-25 17:56:27,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836298536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:27,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:56:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256867087] [2022-11-25 17:56:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:27,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:56:27,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:56:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:56:27,721 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-25 17:56:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:30,625 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-11-25 17:56:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:56:30,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:30,640 INFO L225 Difference]: With dead ends: 3126 [2022-11-25 17:56:30,640 INFO L226 Difference]: Without dead ends: 2865 [2022-11-25 17:56:30,642 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 [2022-11-25 17:56:30,644 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 5058 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 16784 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:30,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5073 Valid, 16784 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:56:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-11-25 17:56:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-11-25 17:56:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-25 17:56:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-11-25 17:56:30,782 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-11-25 17:56:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:30,784 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-11-25 17:56:30,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-25 17:56:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-11-25 17:56:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:30,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:30,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:30,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:56:30,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:30,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-11-25 17:56:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:30,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846326801] [2022-11-25 17:56:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:31,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:31,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846326801] [2022-11-25 17:56:31,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846326801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:31,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:31,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413910866] [2022-11-25 17:56:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:31,144 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:34,783 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-11-25 17:56:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:34,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:34,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:34,800 INFO L225 Difference]: With dead ends: 3779 [2022-11-25 17:56:34,800 INFO L226 Difference]: Without dead ends: 3246 [2022-11-25 17:56:34,807 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 [2022-11-25 17:56:34,811 INFO L413 NwaCegarLoop]: 4365 mSDtfsCounter, 5077 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21557 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:34,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5092 Valid, 21557 Invalid, 2586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:56:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-11-25 17:56:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-11-25 17:56:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-11-25 17:56:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-11-25 17:56:35,006 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-11-25 17:56:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:35,006 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-11-25 17:56:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-11-25 17:56:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:35,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:35,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:35,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:56:35,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-11-25 17:56:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301234134] [2022-11-25 17:56:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:35,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:35,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301234134] [2022-11-25 17:56:35,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301234134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:35,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:35,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325517029] [2022-11-25 17:56:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:35,303 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:38,719 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-11-25 17:56:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:38,736 INFO L225 Difference]: With dead ends: 4741 [2022-11-25 17:56:38,736 INFO L226 Difference]: Without dead ends: 3955 [2022-11-25 17:56:38,740 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 [2022-11-25 17:56:38,741 INFO L413 NwaCegarLoop]: 4223 mSDtfsCounter, 5157 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 20961 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 20961 Invalid, 2329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [83 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 17:56:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-11-25 17:56:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-11-25 17:56:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-11-25 17:56:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-11-25 17:56:38,951 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-11-25 17:56:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:38,957 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-11-25 17:56:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-11-25 17:56:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:38,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:38,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:56:38,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-11-25 17:56:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:38,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175979594] [2022-11-25 17:56:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:39,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175979594] [2022-11-25 17:56:39,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175979594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:39,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:39,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:39,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611272750] [2022-11-25 17:56:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:39,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:39,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:39,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:39,240 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:42,807 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-11-25 17:56:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:42,831 INFO L225 Difference]: With dead ends: 6592 [2022-11-25 17:56:42,832 INFO L226 Difference]: Without dead ends: 5299 [2022-11-25 17:56:42,837 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 [2022-11-25 17:56:42,838 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5075 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5090 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:42,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5090 Valid, 21555 Invalid, 2577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:56:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-11-25 17:56:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-11-25 17:56:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-25 17:56:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-11-25 17:56:43,179 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-11-25 17:56:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:43,181 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-11-25 17:56:43,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-11-25 17:56:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:43,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:43,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:56:43,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-11-25 17:56:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:43,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999507334] [2022-11-25 17:56:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:43,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999507334] [2022-11-25 17:56:43,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999507334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:43,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:43,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190259638] [2022-11-25 17:56:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:43,434 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:47,171 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-11-25 17:56:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:47,210 INFO L225 Difference]: With dead ends: 10286 [2022-11-25 17:56:47,210 INFO L226 Difference]: Without dead ends: 7978 [2022-11-25 17:56:47,220 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 [2022-11-25 17:56:47,221 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5071 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:47,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5086 Valid, 21555 Invalid, 2549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:56:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-11-25 17:56:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-11-25 17:56:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-11-25 17:56:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-11-25 17:56:47,830 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-11-25 17:56:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:47,830 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-11-25 17:56:47,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-11-25 17:56:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:47,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:47,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:56:47,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-11-25 17:56:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:47,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051143885] [2022-11-25 17:56:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:48,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:48,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051143885] [2022-11-25 17:56:48,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051143885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:48,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:48,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:48,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359804946] [2022-11-25 17:56:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:48,082 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:52,607 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-11-25 17:56:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:56:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:52,666 INFO L225 Difference]: With dead ends: 17692 [2022-11-25 17:56:52,666 INFO L226 Difference]: Without dead ends: 13340 [2022-11-25 17:56:52,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:56:52,686 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5070 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:52,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 21555 Invalid, 2536 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 17:56:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-11-25 17:56:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-11-25 17:56:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-11-25 17:56:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-11-25 17:56:53,626 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-11-25 17:56:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:53,626 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-11-25 17:56:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-11-25 17:56:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:53,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:56:53,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-11-25 17:56:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:53,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43332214] [2022-11-25 17:56:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:53,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:53,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43332214] [2022-11-25 17:56:53,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43332214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:53,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:53,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:53,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736563489] [2022-11-25 17:56:53,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:53,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:53,843 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:56:56,816 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-11-25 17:56:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:56:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:56:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:56:56,865 INFO L225 Difference]: With dead ends: 21934 [2022-11-25 17:56:56,865 INFO L226 Difference]: Without dead ends: 13481 [2022-11-25 17:56:56,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:56:56,898 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4771 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 20683 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:56:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 20683 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 17:56:56,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-11-25 17:56:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-11-25 17:56:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-11-25 17:56:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-11-25 17:56:58,137 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-11-25 17:56:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:56:58,137 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-11-25 17:56:58,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:56:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-11-25 17:56:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:56:58,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:56:58,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:56:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:56:58,146 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:56:58,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:56:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-11-25 17:56:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:56:58,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194297279] [2022-11-25 17:56:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:56:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:56:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:56:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:56:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:56:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:56:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:56:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:56:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:58,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194297279] [2022-11-25 17:56:58,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194297279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:56:58,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:56:58,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:56:58,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064866854] [2022-11-25 17:56:58,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:56:58,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:56:58,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:58,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:56:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:56:58,370 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:57:04,183 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-11-25 17:57:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:57:04,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:57:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:57:04,260 INFO L225 Difference]: With dead ends: 32469 [2022-11-25 17:57:04,260 INFO L226 Difference]: Without dead ends: 24016 [2022-11-25 17:57:04,288 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 [2022-11-25 17:57:04,290 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5062 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:57:04,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5077 Valid, 21555 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:57:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-11-25 17:57:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-11-25 17:57:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-11-25 17:57:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-11-25 17:57:05,926 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-11-25 17:57:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:57:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-11-25 17:57:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-11-25 17:57:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:57:05,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:57:05,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:57:05,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:57:05,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:57:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:57:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-11-25 17:57:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:57:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293473424] [2022-11-25 17:57:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:57:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:57:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:57:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:57:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:57:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:57:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:57:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:57:06,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293473424] [2022-11-25 17:57:06,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293473424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:57:06,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:57:06,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:57:06,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467535747] [2022-11-25 17:57:06,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:57:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:57:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:57:06,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:57:06,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:57:06,251 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:57:16,553 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-11-25 17:57:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:57:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:57:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:57:16,762 INFO L225 Difference]: With dead ends: 69837 [2022-11-25 17:57:16,762 INFO L226 Difference]: Without dead ends: 53118 [2022-11-25 17:57:16,808 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 [2022-11-25 17:57:16,808 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5391 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:57:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 21545 Invalid, 2483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 17:57:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-11-25 17:57:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-11-25 17:57:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-11-25 17:57:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-11-25 17:57:21,247 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-11-25 17:57:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:57:21,247 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-11-25 17:57:21,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-11-25 17:57:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:57:21,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:57:21,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:57:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:57:21,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:57:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:57:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-11-25 17:57:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:57:21,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721908912] [2022-11-25 17:57:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:57:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:57:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:57:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:57:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:57:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:57:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:57:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:57:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721908912] [2022-11-25 17:57:21,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721908912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:57:21,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:57:21,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:57:21,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807807073] [2022-11-25 17:57:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:57:21,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:57:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:57:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:57:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:57:21,543 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:57:40,511 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2022-11-25 17:57:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:57:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-11-25 17:57:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:57:41,031 INFO L225 Difference]: With dead ends: 134716 [2022-11-25 17:57:41,031 INFO L226 Difference]: Without dead ends: 101596 [2022-11-25 17:57:41,164 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 [2022-11-25 17:57:41,165 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 5200 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5214 SdHoareTripleChecker+Valid, 20989 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:57:41,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5214 Valid, 20989 Invalid, 2756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:57:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2022-11-25 17:57:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2022-11-25 17:57:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-11-25 17:57:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2022-11-25 17:57:49,748 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2022-11-25 17:57:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:57:49,749 INFO L495 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2022-11-25 17:57:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-11-25 17:57:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2022-11-25 17:57:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-25 17:57:49,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:57:49,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:57:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:57:49,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:57:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:57:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2022-11-25 17:57:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:57:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695803906] [2022-11-25 17:57:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:57:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:57:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:57:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-25 17:57:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:57:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 17:57:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:57:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:57:50,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695803906] [2022-11-25 17:57:50,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695803906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:57:50,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:57:50,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:57:50,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506868432] [2022-11-25 17:57:50,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:57:50,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:57:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:57:50,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:57:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:57:50,032 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)