./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/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_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/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_30d437e3-60c8-49b6-81c3-ded174fa436e/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 d9ed75528b8d19bd57b9807f295b98ef03135122ab1c9d2a59ccb3a2a66766e0 --- 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 16:49:46,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:49:46,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:49:46,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:49:46,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:49:46,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:49:46,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:49:46,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:49:46,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:49:46,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:49:46,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:49:46,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:49:46,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:49:46,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:49:46,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:49:46,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:49:46,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:49:46,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:49:46,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:49:46,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:49:46,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:49:46,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:49:46,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:49:46,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:49:46,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:49:46,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:49:46,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:49:46,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:49:46,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:49:46,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:49:46,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:49:46,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:49:46,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:49:46,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:49:46,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:49:46,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:49:46,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:49:46,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:49:46,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:49:46,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:49:46,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:49:46,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:49:46,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:49:46,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:49:46,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:49:46,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:49:46,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:49:46,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:49:46,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:49:46,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:49:46,159 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:49:46,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:49:46,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:49:46,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:49:46,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:49:46,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:49:46,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:49:46,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:49:46,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:49:46,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:49:46,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:49:46,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:49:46,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:49:46,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:49:46,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:49:46,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:49:46,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:49:46,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:49:46,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:49:46,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:49:46,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:49:46,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:49:46,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:49:46,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:49:46,172 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:49:46,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:49:46,173 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_30d437e3-60c8-49b6-81c3-ded174fa436e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9ed75528b8d19bd57b9807f295b98ef03135122ab1c9d2a59ccb3a2a66766e0 [2022-11-25 16:49:46,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:49:46,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:49:46,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:49:46,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:49:46,576 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:49:46,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c [2022-11-25 16:49:49,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:49:50,747 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:49:50,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c [2022-11-25 16:49:50,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/data/c143c6aaa/53829136d81a441abc113ba7ee68be64/FLAG7cef1c609 [2022-11-25 16:49:50,812 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/data/c143c6aaa/53829136d81a441abc113ba7ee68be64 [2022-11-25 16:49:50,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:49:50,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:49:50,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:49:50,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:49:50,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:49:50,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:49:50" (1/1) ... [2022-11-25 16:49:50,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b633379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:50, skipping insertion in model container [2022-11-25 16:49:50,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:49:50" (1/1) ... [2022-11-25 16:49:50,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:49:51,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:49:53,671 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_30d437e3-60c8-49b6-81c3-ded174fa436e/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c[380323,380336] [2022-11-25 16:49:53,701 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_30d437e3-60c8-49b6-81c3-ded174fa436e/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c[383339,383352] [2022-11-25 16:49:54,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:49:54,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:49:55,458 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_30d437e3-60c8-49b6-81c3-ded174fa436e/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c[380323,380336] [2022-11-25 16:49:55,463 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_30d437e3-60c8-49b6-81c3-ded174fa436e/sv-benchmarks/c/combinations/Problem05_label45+token_ring.10.cil-2.c[383339,383352] [2022-11-25 16:49:55,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:49:55,567 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:49:55,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55 WrapperNode [2022-11-25 16:49:55,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:49:55,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:49:55,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:49:55,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:49:55,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:55,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,078 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-11-25 16:49:56,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:49:56,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:49:56,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:49:56,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:49:56,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:49:56,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:49:56,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:49:56,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:49:56,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (1/1) ... [2022-11-25 16:49:56,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:49:56,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:56,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:49:56,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d437e3-60c8-49b6-81c3-ded174fa436e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:49:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:49:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 16:49:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 16:49:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 16:49:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 16:49:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 16:49:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 16:49:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 16:49:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 16:49:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 16:49:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 16:49:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 16:49:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 16:49:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:49:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:49:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:49:57,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:49:57,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:50:06,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:50:06,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:50:06,576 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-25 16:50:06,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:06 BoogieIcfgContainer [2022-11-25 16:50:06,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:50:06,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:50:06,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:50:06,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:50:06,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:49:50" (1/3) ... [2022-11-25 16:50:06,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7da2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:06, skipping insertion in model container [2022-11-25 16:50:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:49:55" (2/3) ... [2022-11-25 16:50:06,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7da2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:06, skipping insertion in model container [2022-11-25 16:50:06,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:06" (3/3) ... [2022-11-25 16:50:06,599 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.10.cil-2.c [2022-11-25 16:50:06,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:50:06,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:50:06,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:50:06,731 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;@b0dc54e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:50:06,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 16:50:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-25 16:50:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:06,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:06,782 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, 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 16:50:06,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-11-25 16:50:06,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:06,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62016270] [2022-11-25 16:50:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:07,419 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 16:50:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:07,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62016270] [2022-11-25 16:50:07,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62016270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:07,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:07,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:50:07,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742717581] [2022-11-25 16:50:07,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:07,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:50:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:50:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:50:07,483 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 16:50:09,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:09,943 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-11-25 16:50:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:50:09,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:09,978 INFO L225 Difference]: With dead ends: 5140 [2022-11-25 16:50:09,978 INFO L226 Difference]: Without dead ends: 2568 [2022-11-25 16:50:09,990 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 16:50:09,996 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 888 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 16739 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:09,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 16739 Invalid, 931 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 16:50:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-25 16:50:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-11-25 16:50:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-25 16:50:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-11-25 16:50:10,195 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-11-25 16:50:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:10,195 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-11-25 16:50:10,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 16:50:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-11-25 16:50:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:10,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:10,200 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, 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 16:50:10,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:50:10,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-11-25 16:50:10,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:10,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537617367] [2022-11-25 16:50:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:10,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:10,849 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 16:50:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:10,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537617367] [2022-11-25 16:50:10,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537617367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:10,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:10,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81123239] [2022-11-25 16:50:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:10,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:10,869 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:16,086 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-11-25 16:50:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:16,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:16,117 INFO L225 Difference]: With dead ends: 3341 [2022-11-25 16:50:16,117 INFO L226 Difference]: Without dead ends: 3032 [2022-11-25 16:50:16,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:16,124 INFO L413 NwaCegarLoop]: 4443 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21893 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:16,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21893 Invalid, 3253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 16:50:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-11-25 16:50:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-11-25 16:50:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-25 16:50:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-11-25 16:50:16,382 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-11-25 16:50:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:16,383 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-11-25 16:50:16,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-11-25 16:50:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:16,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:16,387 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, 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 16:50:16,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:50:16,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-11-25 16:50:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:16,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641767733] [2022-11-25 16:50:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:16,715 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 16:50:16,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:16,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641767733] [2022-11-25 16:50:16,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641767733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:16,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:16,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:16,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958618577] [2022-11-25 16:50:16,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:16,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:16,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:16,719 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:21,674 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-11-25 16:50:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:21,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:21,696 INFO L225 Difference]: With dead ends: 4476 [2022-11-25 16:50:21,696 INFO L226 Difference]: Without dead ends: 3842 [2022-11-25 16:50:21,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:21,705 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5274 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:21,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 21789 Invalid, 3067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 16:50:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-25 16:50:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-11-25 16:50:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-11-25 16:50:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-11-25 16:50:21,981 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-11-25 16:50:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:21,981 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-11-25 16:50:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-11-25 16:50:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:21,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:21,986 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, 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 16:50:21,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:50:21,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-11-25 16:50:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:21,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149654878] [2022-11-25 16:50:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:22,383 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 16:50:22,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:22,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149654878] [2022-11-25 16:50:22,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149654878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:22,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:22,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911248200] [2022-11-25 16:50:22,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:22,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:22,388 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:27,388 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-11-25 16:50:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:27,417 INFO L225 Difference]: With dead ends: 6696 [2022-11-25 16:50:27,418 INFO L226 Difference]: Without dead ends: 5460 [2022-11-25 16:50:27,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:27,427 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:27,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 16:50:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-25 16:50:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-11-25 16:50:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-11-25 16:50:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-11-25 16:50:27,907 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-11-25 16:50:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:27,911 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-11-25 16:50:27,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-11-25 16:50:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:27,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:27,917 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, 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 16:50:27,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:50:27,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-11-25 16:50:27,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:27,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004121785] [2022-11-25 16:50:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:27,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,337 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 16:50:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:28,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004121785] [2022-11-25 16:50:28,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004121785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:28,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:28,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890046201] [2022-11-25 16:50:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:28,344 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:34,097 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-11-25 16:50:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:34,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:34,152 INFO L225 Difference]: With dead ends: 11134 [2022-11-25 16:50:34,152 INFO L226 Difference]: Without dead ends: 8692 [2022-11-25 16:50:34,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:34,164 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:34,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 16:50:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-11-25 16:50:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-11-25 16:50:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-11-25 16:50:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-11-25 16:50:34,907 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-11-25 16:50:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:34,907 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-11-25 16:50:34,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-11-25 16:50:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:34,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:34,915 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, 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 16:50:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:50:34,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-11-25 16:50:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617401622] [2022-11-25 16:50:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:34,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,266 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 16:50:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617401622] [2022-11-25 16:50:35,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617401622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:35,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982621829] [2022-11-25 16:50:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:35,271 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:41,111 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-11-25 16:50:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:41,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:41,185 INFO L225 Difference]: With dead ends: 20008 [2022-11-25 16:50:41,185 INFO L226 Difference]: Without dead ends: 15148 [2022-11-25 16:50:41,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:41,207 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:41,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 16:50:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-11-25 16:50:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-11-25 16:50:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-11-25 16:50:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-11-25 16:50:42,818 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-11-25 16:50:42,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:42,820 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-11-25 16:50:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-11-25 16:50:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:42,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:42,830 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, 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 16:50:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:50:42,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-11-25 16:50:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:42,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854597784] [2022-11-25 16:50:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:43,141 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 16:50:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:43,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854597784] [2022-11-25 16:50:43,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854597784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:43,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:43,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499832956] [2022-11-25 16:50:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:43,145 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:51,271 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-11-25 16:50:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:50:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:50:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:51,410 INFO L225 Difference]: With dead ends: 37754 [2022-11-25 16:50:51,410 INFO L226 Difference]: Without dead ends: 28044 [2022-11-25 16:50:51,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:51,455 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:51,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 16:50:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-11-25 16:50:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-11-25 16:50:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-25 16:50:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-11-25 16:50:54,255 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-11-25 16:50:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:54,256 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-11-25 16:50:54,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:50:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-11-25 16:50:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:50:54,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:54,272 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, 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 16:50:54,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:50:54,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:54,274 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-11-25 16:50:54,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:54,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172832706] [2022-11-25 16:50:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:50:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:50:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:50:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:50:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:50:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:54,524 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 16:50:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:54,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172832706] [2022-11-25 16:50:54,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172832706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:54,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:54,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012281553] [2022-11-25 16:50:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:54,527 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:51:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:51:00,538 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-11-25 16:51:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:51:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:51:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:51:00,686 INFO L225 Difference]: With dead ends: 47941 [2022-11-25 16:51:00,686 INFO L226 Difference]: Without dead ends: 28499 [2022-11-25 16:51:00,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:51:00,967 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4929 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 20851 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:51:00,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 20851 Invalid, 1601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 16:51:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-11-25 16:51:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-11-25 16:51:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-25 16:51:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-11-25 16:51:04,124 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-11-25 16:51:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:51:04,126 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-11-25 16:51:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:51:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-11-25 16:51:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:51:04,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:04,155 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, 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 16:51:04,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:51:04,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:04,157 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-11-25 16:51:04,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733490909] [2022-11-25 16:51:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:51:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:51:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:51:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:51:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:51:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:04,610 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 16:51:04,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:04,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733490909] [2022-11-25 16:51:04,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733490909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:04,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:04,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:51:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828619415] [2022-11-25 16:51:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:04,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:51:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:51:04,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:51:04,617 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:51:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:51:17,046 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-11-25 16:51:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 16:51:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-11-25 16:51:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:51:17,287 INFO L225 Difference]: With dead ends: 73117 [2022-11-25 16:51:17,288 INFO L226 Difference]: Without dead ends: 53677 [2022-11-25 16:51:17,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:51:17,356 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5265 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:51:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5282 Valid, 21890 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 16:51:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-11-25 16:51:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-11-25 16:51:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-11-25 16:51:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-11-25 16:51:23,262 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-11-25 16:51:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:51:23,263 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-11-25 16:51:23,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 16:51:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-11-25 16:51:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 16:51:23,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:51:23,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:51:23,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:51:23,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:51:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-11-25 16:51:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:51:23,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313721871] [2022-11-25 16:51:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:51:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:51:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 16:51:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 16:51:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 16:51:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 16:51:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 16:51:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:51:23,875 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 16:51:23,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:51:23,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313721871] [2022-11-25 16:51:23,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313721871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:51:23,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:51:23,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:51:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106734735] [2022-11-25 16:51:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:51:23,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:51:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:51:23,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:51:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:51:23,880 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)