./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/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_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/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_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- 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 15:30:56,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:30:56,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:30:56,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:30:56,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:30:56,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:30:56,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:30:56,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:30:56,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:30:56,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:30:56,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:30:56,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:30:56,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:30:56,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:30:56,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:30:56,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:30:56,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:30:56,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:30:56,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:30:56,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:30:56,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:30:56,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:30:56,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:30:56,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:30:56,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:30:56,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:30:56,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:30:56,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:30:56,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:30:56,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:30:56,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:30:56,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:30:56,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:30:56,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:30:56,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:30:56,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:30:56,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:30:56,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:30:56,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:30:56,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:30:56,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:30:56,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:30:56,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:30:56,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:30:56,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:30:56,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:30:56,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:30:56,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:30:56,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:30:56,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:30:56,231 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:30:56,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:30:56,232 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:30:56,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:30:56,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:30:56,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:30:56,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:30:56,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:30:56,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:30:56,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:30:56,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:30:56,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:30:56,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:30:56,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:30:56,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:30:56,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:30:56,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:30:56,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:30:56,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:30:56,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:30:56,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:30:56,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:30:56,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:30:56,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:30:56,239 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:30:56,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:30:56,239 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_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2022-11-25 15:30:56,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:30:56,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:30:56,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:30:56,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:30:56,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:30:56,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-11-25 15:30:59,628 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:30:59,975 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:30:59,978 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-11-25 15:30:59,990 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/data/b4a9f2fb4/88fa6452b9684943b6a7456d6f1f56f2/FLAG12b615ec4 [2022-11-25 15:31:00,011 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/data/b4a9f2fb4/88fa6452b9684943b6a7456d6f1f56f2 [2022-11-25 15:31:00,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:31:00,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:31:00,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:31:00,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:31:00,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:31:00,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357fb8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00, skipping insertion in model container [2022-11-25 15:31:00,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:31:00,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:31:00,349 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_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2022-11-25 15:31:00,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:31:00,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:31:00,432 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_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2022-11-25 15:31:00,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:31:00,452 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:31:00,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00 WrapperNode [2022-11-25 15:31:00,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:31:00,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:31:00,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:31:00,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:31:00,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,525 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 483 [2022-11-25 15:31:00,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:31:00,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:31:00,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:31:00,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:31:00,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:31:00,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:31:00,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:31:00,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:31:00,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (1/1) ... [2022-11-25 15:31:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:31:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:31:00,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:31:00,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:31:00,699 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-11-25 15:31:00,699 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-11-25 15:31:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:31:00,700 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-11-25 15:31:00,700 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-11-25 15:31:00,702 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 15:31:00,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 15:31:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 15:31:00,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 15:31:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:31:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-11-25 15:31:00,703 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-11-25 15:31:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:31:00,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:31:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-11-25 15:31:00,704 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-11-25 15:31:00,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:31:00,876 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:31:01,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:31:01,526 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:31:01,526 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:31:01,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:31:01 BoogieIcfgContainer [2022-11-25 15:31:01,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:31:01,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:31:01,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:31:01,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:31:01,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:31:00" (1/3) ... [2022-11-25 15:31:01,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59273592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:31:01, skipping insertion in model container [2022-11-25 15:31:01,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:31:00" (2/3) ... [2022-11-25 15:31:01,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59273592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:31:01, skipping insertion in model container [2022-11-25 15:31:01,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:31:01" (3/3) ... [2022-11-25 15:31:01,554 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2022-11-25 15:31:01,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:31:01,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:31:01,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:31:01,669 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;@723f1d21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:31:01,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:31:01,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 137 states have (on average 1.562043795620438) internal successors, (214), 138 states have internal predecessors, (214), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 15:31:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 15:31:01,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:01,685 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] [2022-11-25 15:31:01,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2020441289, now seen corresponding path program 1 times [2022-11-25 15:31:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:01,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656448067] [2022-11-25 15:31:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:31:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:01,970 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 15:31:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656448067] [2022-11-25 15:31:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656448067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:01,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:01,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:31:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490746335] [2022-11-25 15:31:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:01,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:31:01,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:31:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:31:02,014 INFO L87 Difference]: Start difference. First operand has 174 states, 137 states have (on average 1.562043795620438) internal successors, (214), 138 states have internal predecessors, (214), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:02,076 INFO L93 Difference]: Finished difference Result 332 states and 544 transitions. [2022-11-25 15:31:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:31:02,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-25 15:31:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:02,089 INFO L225 Difference]: With dead ends: 332 [2022-11-25 15:31:02,089 INFO L226 Difference]: Without dead ends: 170 [2022-11-25 15:31:02,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:31:02,097 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:02,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-25 15:31:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-25 15:31:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.544776119402985) internal successors, (207), 134 states have internal predecessors, (207), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 15:31:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 265 transitions. [2022-11-25 15:31:02,159 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 265 transitions. Word has length 28 [2022-11-25 15:31:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:02,160 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 265 transitions. [2022-11-25 15:31:02,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 265 transitions. [2022-11-25 15:31:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 15:31:02,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:02,163 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] [2022-11-25 15:31:02,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:31:02,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1801586571, now seen corresponding path program 1 times [2022-11-25 15:31:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:02,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555433235] [2022-11-25 15:31:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 15:31:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:02,495 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 15:31:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555433235] [2022-11-25 15:31:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555433235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:31:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621959080] [2022-11-25 15:31:02,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:02,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:31:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:31:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:31:02,500 INFO L87 Difference]: Start difference. First operand 170 states and 265 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:02,668 INFO L93 Difference]: Finished difference Result 437 states and 687 transitions. [2022-11-25 15:31:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:31:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-25 15:31:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:02,684 INFO L225 Difference]: With dead ends: 437 [2022-11-25 15:31:02,684 INFO L226 Difference]: Without dead ends: 281 [2022-11-25 15:31:02,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:31:02,687 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 137 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:02,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1361 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-25 15:31:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 170. [2022-11-25 15:31:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 134 states have (on average 1.455223880597015) internal successors, (195), 134 states have internal predecessors, (195), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 15:31:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 253 transitions. [2022-11-25 15:31:02,712 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 253 transitions. Word has length 28 [2022-11-25 15:31:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:02,713 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 253 transitions. [2022-11-25 15:31:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 253 transitions. [2022-11-25 15:31:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 15:31:02,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:02,715 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] [2022-11-25 15:31:02,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:31:02,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -18195919, now seen corresponding path program 1 times [2022-11-25 15:31:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:02,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256065953] [2022-11-25 15:31:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,049 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 15:31:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:03,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256065953] [2022-11-25 15:31:03,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256065953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:03,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:03,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391106590] [2022-11-25 15:31:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:03,055 INFO L87 Difference]: Start difference. First operand 170 states and 253 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:03,138 INFO L93 Difference]: Finished difference Result 327 states and 496 transitions. [2022-11-25 15:31:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-11-25 15:31:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:03,141 INFO L225 Difference]: With dead ends: 327 [2022-11-25 15:31:03,141 INFO L226 Difference]: Without dead ends: 174 [2022-11-25 15:31:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:03,144 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 5 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:03,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 731 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-25 15:31:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-25 15:31:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.4452554744525548) internal successors, (198), 137 states have internal predecessors, (198), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 15:31:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2022-11-25 15:31:03,165 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 39 [2022-11-25 15:31:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:03,166 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2022-11-25 15:31:03,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:31:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2022-11-25 15:31:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:31:03,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:03,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:03,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:31:03,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1188938241, now seen corresponding path program 1 times [2022-11-25 15:31:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:03,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312970587] [2022-11-25 15:31:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 15:31:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:03,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312970587] [2022-11-25 15:31:03,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312970587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:03,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:03,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:31:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449270342] [2022-11-25 15:31:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:03,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:03,360 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:03,427 INFO L93 Difference]: Finished difference Result 479 states and 716 transitions. [2022-11-25 15:31:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-11-25 15:31:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:03,431 INFO L225 Difference]: With dead ends: 479 [2022-11-25 15:31:03,431 INFO L226 Difference]: Without dead ends: 322 [2022-11-25 15:31:03,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:03,434 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 209 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:03,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 530 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-25 15:31:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-11-25 15:31:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 244 states have (on average 1.4672131147540983) internal successors, (358), 245 states have internal predecessors, (358), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-25 15:31:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 472 transitions. [2022-11-25 15:31:03,482 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 472 transitions. Word has length 55 [2022-11-25 15:31:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:03,482 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 472 transitions. [2022-11-25 15:31:03,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 472 transitions. [2022-11-25 15:31:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:31:03,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:03,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:03,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:31:03,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash -198231537, now seen corresponding path program 1 times [2022-11-25 15:31:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533987410] [2022-11-25 15:31:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:31:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533987410] [2022-11-25 15:31:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533987410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:03,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:03,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:31:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634159119] [2022-11-25 15:31:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:03,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:03,570 INFO L87 Difference]: Start difference. First operand 316 states and 472 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:03,636 INFO L93 Difference]: Finished difference Result 890 states and 1340 transitions. [2022-11-25 15:31:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-25 15:31:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:03,643 INFO L225 Difference]: With dead ends: 890 [2022-11-25 15:31:03,643 INFO L226 Difference]: Without dead ends: 591 [2022-11-25 15:31:03,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:03,646 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 205 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:03,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 547 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-25 15:31:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 575. [2022-11-25 15:31:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 433 states have (on average 1.4734411085450347) internal successors, (638), 436 states have internal predecessors, (638), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-25 15:31:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 864 transitions. [2022-11-25 15:31:03,710 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 864 transitions. Word has length 56 [2022-11-25 15:31:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:03,711 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 864 transitions. [2022-11-25 15:31:03,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 864 transitions. [2022-11-25 15:31:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:31:03,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:03,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:31:03,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:03,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1478095215, now seen corresponding path program 1 times [2022-11-25 15:31:03,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:03,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303543883] [2022-11-25 15:31:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:31:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:03,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:03,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303543883] [2022-11-25 15:31:03,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303543883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:03,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:03,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:31:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211884499] [2022-11-25 15:31:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:03,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:31:03,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:31:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:03,900 INFO L87 Difference]: Start difference. First operand 575 states and 864 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:04,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:04,283 INFO L93 Difference]: Finished difference Result 1562 states and 2398 transitions. [2022-11-25 15:31:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:31:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-11-25 15:31:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:04,290 INFO L225 Difference]: With dead ends: 1562 [2022-11-25 15:31:04,290 INFO L226 Difference]: Without dead ends: 1004 [2022-11-25 15:31:04,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:31:04,294 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 615 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:04,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 659 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:31:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-25 15:31:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 652. [2022-11-25 15:31:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 502 states have (on average 1.4601593625498008) internal successors, (733), 505 states have internal predecessors, (733), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 967 transitions. [2022-11-25 15:31:04,386 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 967 transitions. Word has length 56 [2022-11-25 15:31:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:04,386 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 967 transitions. [2022-11-25 15:31:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 967 transitions. [2022-11-25 15:31:04,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 15:31:04,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:04,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:31:04,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1509273694, now seen corresponding path program 1 times [2022-11-25 15:31:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:04,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721587398] [2022-11-25 15:31:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 15:31:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721587398] [2022-11-25 15:31:04,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721587398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:04,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:04,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:31:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670469267] [2022-11-25 15:31:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:04,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:31:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:31:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:04,518 INFO L87 Difference]: Start difference. First operand 652 states and 967 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:04,950 INFO L93 Difference]: Finished difference Result 1566 states and 2398 transitions. [2022-11-25 15:31:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:31:04,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-25 15:31:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:04,959 INFO L225 Difference]: With dead ends: 1566 [2022-11-25 15:31:04,959 INFO L226 Difference]: Without dead ends: 1008 [2022-11-25 15:31:04,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:31:04,964 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 612 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:04,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 661 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:31:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-11-25 15:31:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 660. [2022-11-25 15:31:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 510 states have (on average 1.4529411764705882) internal successors, (741), 513 states have internal predecessors, (741), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 975 transitions. [2022-11-25 15:31:05,072 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 975 transitions. Word has length 57 [2022-11-25 15:31:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:05,075 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 975 transitions. [2022-11-25 15:31:05,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 975 transitions. [2022-11-25 15:31:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 15:31:05,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:05,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:31:05,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2145986192, now seen corresponding path program 1 times [2022-11-25 15:31:05,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:05,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692274866] [2022-11-25 15:31:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 15:31:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:05,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:05,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692274866] [2022-11-25 15:31:05,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692274866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:05,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:05,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598078568] [2022-11-25 15:31:05,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:05,316 INFO L87 Difference]: Start difference. First operand 660 states and 975 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:05,714 INFO L93 Difference]: Finished difference Result 1566 states and 2390 transitions. [2022-11-25 15:31:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2022-11-25 15:31:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:05,720 INFO L225 Difference]: With dead ends: 1566 [2022-11-25 15:31:05,720 INFO L226 Difference]: Without dead ends: 1008 [2022-11-25 15:31:05,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:05,726 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 178 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:05,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 634 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:31:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-11-25 15:31:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 660. [2022-11-25 15:31:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 510 states have (on average 1.4450980392156862) internal successors, (737), 513 states have internal predecessors, (737), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 971 transitions. [2022-11-25 15:31:05,823 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 971 transitions. Word has length 59 [2022-11-25 15:31:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:05,824 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 971 transitions. [2022-11-25 15:31:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:31:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 971 transitions. [2022-11-25 15:31:05,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 15:31:05,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:05,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:05,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:31:05,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -331059873, now seen corresponding path program 1 times [2022-11-25 15:31:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:05,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311954350] [2022-11-25 15:31:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:05,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:06,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311954350] [2022-11-25 15:31:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311954350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:06,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:06,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892554932] [2022-11-25 15:31:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:06,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:06,042 INFO L87 Difference]: Start difference. First operand 660 states and 971 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 15:31:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:06,141 INFO L93 Difference]: Finished difference Result 1238 states and 1845 transitions. [2022-11-25 15:31:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2022-11-25 15:31:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:06,147 INFO L225 Difference]: With dead ends: 1238 [2022-11-25 15:31:06,147 INFO L226 Difference]: Without dead ends: 680 [2022-11-25 15:31:06,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:06,152 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 6 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:06,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 743 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-11-25 15:31:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2022-11-25 15:31:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 526 states have (on average 1.4315589353612168) internal successors, (753), 529 states have internal predecessors, (753), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 987 transitions. [2022-11-25 15:31:06,249 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 987 transitions. Word has length 60 [2022-11-25 15:31:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:06,251 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 987 transitions. [2022-11-25 15:31:06,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 15:31:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 987 transitions. [2022-11-25 15:31:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 15:31:06,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:06,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:06,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:31:06,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:06,254 INFO L85 PathProgramCache]: Analyzing trace with hash 552122021, now seen corresponding path program 1 times [2022-11-25 15:31:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:06,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694093782] [2022-11-25 15:31:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:06,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:06,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:06,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694093782] [2022-11-25 15:31:06,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694093782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:06,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:06,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:06,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15861747] [2022-11-25 15:31:06,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:06,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:06,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:06,495 INFO L87 Difference]: Start difference. First operand 680 states and 987 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:31:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:06,601 INFO L93 Difference]: Finished difference Result 1278 states and 1889 transitions. [2022-11-25 15:31:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2022-11-25 15:31:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:06,605 INFO L225 Difference]: With dead ends: 1278 [2022-11-25 15:31:06,606 INFO L226 Difference]: Without dead ends: 700 [2022-11-25 15:31:06,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:06,609 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:06,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 729 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-25 15:31:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2022-11-25 15:31:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 542 states have (on average 1.418819188191882) internal successors, (769), 545 states have internal predecessors, (769), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1003 transitions. [2022-11-25 15:31:06,691 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1003 transitions. Word has length 68 [2022-11-25 15:31:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1003 transitions. [2022-11-25 15:31:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:31:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1003 transitions. [2022-11-25 15:31:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 15:31:06,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:06,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:31:06,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1190568079, now seen corresponding path program 1 times [2022-11-25 15:31:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:06,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646358211] [2022-11-25 15:31:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:06,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646358211] [2022-11-25 15:31:06,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646358211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:06,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:06,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026988550] [2022-11-25 15:31:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:06,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:06,915 INFO L87 Difference]: Start difference. First operand 700 states and 1003 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 15:31:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:07,014 INFO L93 Difference]: Finished difference Result 1314 states and 1905 transitions. [2022-11-25 15:31:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-25 15:31:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:07,019 INFO L225 Difference]: With dead ends: 1314 [2022-11-25 15:31:07,020 INFO L226 Difference]: Without dead ends: 716 [2022-11-25 15:31:07,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:07,022 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 5 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:07,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 738 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-25 15:31:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-11-25 15:31:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 554 states have (on average 1.4097472924187726) internal successors, (781), 557 states have internal predecessors, (781), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1015 transitions. [2022-11-25 15:31:07,096 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1015 transitions. Word has length 76 [2022-11-25 15:31:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:07,096 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1015 transitions. [2022-11-25 15:31:07,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 15:31:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1015 transitions. [2022-11-25 15:31:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 15:31:07,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:07,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:31:07,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -707939914, now seen corresponding path program 1 times [2022-11-25 15:31:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321763444] [2022-11-25 15:31:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:31:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:07,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321763444] [2022-11-25 15:31:07,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321763444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:07,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:07,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546928536] [2022-11-25 15:31:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:07,306 INFO L87 Difference]: Start difference. First operand 716 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 15:31:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:07,431 INFO L93 Difference]: Finished difference Result 1350 states and 1945 transitions. [2022-11-25 15:31:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-11-25 15:31:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:07,436 INFO L225 Difference]: With dead ends: 1350 [2022-11-25 15:31:07,436 INFO L226 Difference]: Without dead ends: 736 [2022-11-25 15:31:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:07,439 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 729 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-11-25 15:31:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2022-11-25 15:31:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 570 states have (on average 1.3982456140350876) internal successors, (797), 573 states have internal predecessors, (797), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1031 transitions. [2022-11-25 15:31:07,517 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1031 transitions. Word has length 76 [2022-11-25 15:31:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1031 transitions. [2022-11-25 15:31:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 15:31:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1031 transitions. [2022-11-25 15:31:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 15:31:07,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:07,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:31:07,522 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2061455174, now seen corresponding path program 1 times [2022-11-25 15:31:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:07,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148804626] [2022-11-25 15:31:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:31:07,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:07,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148804626] [2022-11-25 15:31:07,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148804626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:07,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:07,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604976033] [2022-11-25 15:31:07,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:07,759 INFO L87 Difference]: Start difference. First operand 736 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 15:31:07,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:07,859 INFO L93 Difference]: Finished difference Result 1394 states and 1973 transitions. [2022-11-25 15:31:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:07,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-11-25 15:31:07,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:07,865 INFO L225 Difference]: With dead ends: 1394 [2022-11-25 15:31:07,865 INFO L226 Difference]: Without dead ends: 760 [2022-11-25 15:31:07,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:07,868 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:07,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 740 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-25 15:31:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2022-11-25 15:31:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 590 states have (on average 1.3847457627118644) internal successors, (817), 593 states have internal predecessors, (817), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 15:31:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1051 transitions. [2022-11-25 15:31:07,941 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1051 transitions. Word has length 84 [2022-11-25 15:31:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:07,941 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1051 transitions. [2022-11-25 15:31:07,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-25 15:31:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1051 transitions. [2022-11-25 15:31:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 15:31:07,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:07,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:31:07,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 294051441, now seen corresponding path program 1 times [2022-11-25 15:31:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814651291] [2022-11-25 15:31:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:31:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814651291] [2022-11-25 15:31:08,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814651291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:08,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:08,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:31:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971895715] [2022-11-25 15:31:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:31:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:31:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:31:08,276 INFO L87 Difference]: Start difference. First operand 760 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 15:31:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:08,712 INFO L93 Difference]: Finished difference Result 2232 states and 3130 transitions. [2022-11-25 15:31:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:31:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2022-11-25 15:31:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:08,723 INFO L225 Difference]: With dead ends: 2232 [2022-11-25 15:31:08,723 INFO L226 Difference]: Without dead ends: 1574 [2022-11-25 15:31:08,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:31:08,727 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 318 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:08,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1860 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:31:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-25 15:31:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 913. [2022-11-25 15:31:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 706 states have (on average 1.3739376770538243) internal successors, (970), 710 states have internal predecessors, (970), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-25 15:31:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1252 transitions. [2022-11-25 15:31:08,910 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1252 transitions. Word has length 87 [2022-11-25 15:31:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:08,911 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1252 transitions. [2022-11-25 15:31:08,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 15:31:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1252 transitions. [2022-11-25 15:31:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 15:31:08,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:08,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:31:08,913 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:08,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -57336768, now seen corresponding path program 1 times [2022-11-25 15:31:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:08,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848881470] [2022-11-25 15:31:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 15:31:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:31:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:09,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848881470] [2022-11-25 15:31:09,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848881470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:09,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:09,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858978926] [2022-11-25 15:31:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:09,127 INFO L87 Difference]: Start difference. First operand 913 states and 1252 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:31:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:09,254 INFO L93 Difference]: Finished difference Result 1699 states and 2353 transitions. [2022-11-25 15:31:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2022-11-25 15:31:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:09,259 INFO L225 Difference]: With dead ends: 1699 [2022-11-25 15:31:09,260 INFO L226 Difference]: Without dead ends: 933 [2022-11-25 15:31:09,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:09,264 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 5 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:09,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 738 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-25 15:31:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 933. [2022-11-25 15:31:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 721 states have (on average 1.3661581137309293) internal successors, (985), 725 states have internal predecessors, (985), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-25 15:31:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1267 transitions. [2022-11-25 15:31:09,399 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1267 transitions. Word has length 91 [2022-11-25 15:31:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1267 transitions. [2022-11-25 15:31:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:31:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1267 transitions. [2022-11-25 15:31:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 15:31:09,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:09,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:09,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:31:09,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash -56830257, now seen corresponding path program 1 times [2022-11-25 15:31:09,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098527492] [2022-11-25 15:31:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:31:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098527492] [2022-11-25 15:31:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098527492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:09,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:09,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:31:09,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496646790] [2022-11-25 15:31:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:31:09,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:31:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:31:09,653 INFO L87 Difference]: Start difference. First operand 933 states and 1267 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:31:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:09,877 INFO L93 Difference]: Finished difference Result 1345 states and 1928 transitions. [2022-11-25 15:31:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:31:09,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2022-11-25 15:31:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:09,885 INFO L225 Difference]: With dead ends: 1345 [2022-11-25 15:31:09,885 INFO L226 Difference]: Without dead ends: 1343 [2022-11-25 15:31:09,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:31:09,887 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 195 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:09,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1926 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-11-25 15:31:10,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 935. [2022-11-25 15:31:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 721 states have (on average 1.3661581137309293) internal successors, (985), 726 states have internal predecessors, (985), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2022-11-25 15:31:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1269 transitions. [2022-11-25 15:31:10,032 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1269 transitions. Word has length 90 [2022-11-25 15:31:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:10,032 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1269 transitions. [2022-11-25 15:31:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-25 15:31:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1269 transitions. [2022-11-25 15:31:10,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 15:31:10,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:10,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:10,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:31:10,035 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -130986151, now seen corresponding path program 1 times [2022-11-25 15:31:10,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:10,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676782107] [2022-11-25 15:31:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:31:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:10,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676782107] [2022-11-25 15:31:10,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676782107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:10,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:10,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:31:10,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956411358] [2022-11-25 15:31:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:31:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:31:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:31:10,202 INFO L87 Difference]: Start difference. First operand 935 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:31:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:10,520 INFO L93 Difference]: Finished difference Result 1910 states and 2652 transitions. [2022-11-25 15:31:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:31:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2022-11-25 15:31:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:10,526 INFO L225 Difference]: With dead ends: 1910 [2022-11-25 15:31:10,526 INFO L226 Difference]: Without dead ends: 1163 [2022-11-25 15:31:10,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:31:10,529 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 353 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:10,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1815 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-25 15:31:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 954. [2022-11-25 15:31:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 745 states have (on average 1.3610738255033556) internal successors, (1014), 754 states have internal predecessors, (1014), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2022-11-25 15:31:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1286 transitions. [2022-11-25 15:31:10,655 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1286 transitions. Word has length 93 [2022-11-25 15:31:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:10,656 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1286 transitions. [2022-11-25 15:31:10,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:31:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1286 transitions. [2022-11-25 15:31:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 15:31:10,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:10,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:10,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:31:10,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash -607433833, now seen corresponding path program 1 times [2022-11-25 15:31:10,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:10,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520767560] [2022-11-25 15:31:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:31:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:31:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520767560] [2022-11-25 15:31:10,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520767560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:10,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:10,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:31:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688315609] [2022-11-25 15:31:10,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:10,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:31:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:10,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:31:10,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:31:10,977 INFO L87 Difference]: Start difference. First operand 954 states and 1286 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 15:31:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:11,389 INFO L93 Difference]: Finished difference Result 1962 states and 2718 transitions. [2022-11-25 15:31:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:31:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-11-25 15:31:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:11,397 INFO L225 Difference]: With dead ends: 1962 [2022-11-25 15:31:11,398 INFO L226 Difference]: Without dead ends: 1186 [2022-11-25 15:31:11,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:31:11,401 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 260 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:11,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1967 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-25 15:31:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 943. [2022-11-25 15:31:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 737 states have (on average 1.3595658073270014) internal successors, (1002), 746 states have internal predecessors, (1002), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2022-11-25 15:31:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1270 transitions. [2022-11-25 15:31:11,544 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1270 transitions. Word has length 95 [2022-11-25 15:31:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:11,544 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1270 transitions. [2022-11-25 15:31:11,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 15:31:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1270 transitions. [2022-11-25 15:31:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 15:31:11,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:11,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:31:11,547 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2125250997, now seen corresponding path program 1 times [2022-11-25 15:31:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:11,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376566597] [2022-11-25 15:31:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 15:31:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 15:31:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:31:11,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:11,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376566597] [2022-11-25 15:31:11,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376566597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:11,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:11,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:31:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812868424] [2022-11-25 15:31:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:11,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:31:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:31:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:31:11,895 INFO L87 Difference]: Start difference. First operand 943 states and 1270 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 15:31:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:12,772 INFO L93 Difference]: Finished difference Result 2170 states and 3002 transitions. [2022-11-25 15:31:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:31:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 96 [2022-11-25 15:31:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:12,780 INFO L225 Difference]: With dead ends: 2170 [2022-11-25 15:31:12,780 INFO L226 Difference]: Without dead ends: 1374 [2022-11-25 15:31:12,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:31:12,783 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 876 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1745 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:31:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2022-11-25 15:31:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 959. [2022-11-25 15:31:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 745 states have (on average 1.3355704697986577) internal successors, (995), 755 states have internal predecessors, (995), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2022-11-25 15:31:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1269 transitions. [2022-11-25 15:31:12,972 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1269 transitions. Word has length 96 [2022-11-25 15:31:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:12,973 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1269 transitions. [2022-11-25 15:31:12,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 15:31:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1269 transitions. [2022-11-25 15:31:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 15:31:12,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:12,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:31:12,975 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -323529142, now seen corresponding path program 1 times [2022-11-25 15:31:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655718241] [2022-11-25 15:31:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:31:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:31:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:31:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:31:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:13,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:13,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655718241] [2022-11-25 15:31:13,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655718241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:13,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658918592] [2022-11-25 15:31:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:13,085 INFO L87 Difference]: Start difference. First operand 959 states and 1269 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:13,537 INFO L93 Difference]: Finished difference Result 2715 states and 3663 transitions. [2022-11-25 15:31:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-11-25 15:31:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:13,546 INFO L225 Difference]: With dead ends: 2715 [2022-11-25 15:31:13,546 INFO L226 Difference]: Without dead ends: 1954 [2022-11-25 15:31:13,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:13,550 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 370 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:13,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1055 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-25 15:31:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1540. [2022-11-25 15:31:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1183 states have (on average 1.3296703296703296) internal successors, (1573), 1199 states have internal predecessors, (1573), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-25 15:31:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2035 transitions. [2022-11-25 15:31:13,796 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2035 transitions. Word has length 97 [2022-11-25 15:31:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:13,796 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2035 transitions. [2022-11-25 15:31:13,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2035 transitions. [2022-11-25 15:31:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 15:31:13,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:13,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:13,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:31:13,799 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -938522497, now seen corresponding path program 1 times [2022-11-25 15:31:13,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:13,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244796110] [2022-11-25 15:31:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:13,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:31:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:31:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:31:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:31:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:31:14,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:14,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244796110] [2022-11-25 15:31:14,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244796110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:14,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:14,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:31:14,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838573268] [2022-11-25 15:31:14,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:14,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:31:14,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:31:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:31:14,238 INFO L87 Difference]: Start difference. First operand 1540 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:15,347 INFO L93 Difference]: Finished difference Result 3608 states and 4885 transitions. [2022-11-25 15:31:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:31:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-11-25 15:31:15,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:15,357 INFO L225 Difference]: With dead ends: 3608 [2022-11-25 15:31:15,357 INFO L226 Difference]: Without dead ends: 2344 [2022-11-25 15:31:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:31:15,361 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 680 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1883 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:31:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-11-25 15:31:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 1565. [2022-11-25 15:31:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1195 states have (on average 1.3230125523012553) internal successors, (1581), 1212 states have internal predecessors, (1581), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-11-25 15:31:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2059 transitions. [2022-11-25 15:31:15,644 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2059 transitions. Word has length 99 [2022-11-25 15:31:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:15,644 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2059 transitions. [2022-11-25 15:31:15,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2059 transitions. [2022-11-25 15:31:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:31:15,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:15,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:15,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:31:15,647 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1096774987, now seen corresponding path program 1 times [2022-11-25 15:31:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:15,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340104882] [2022-11-25 15:31:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:31:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:31:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 15:31:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:31:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:31:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:31:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:31:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:15,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340104882] [2022-11-25 15:31:15,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340104882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:15,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:15,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759364486] [2022-11-25 15:31:15,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:15,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:15,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:15,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:15,797 INFO L87 Difference]: Start difference. First operand 1565 states and 2059 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:16,431 INFO L93 Difference]: Finished difference Result 4002 states and 5316 transitions. [2022-11-25 15:31:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-25 15:31:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:16,444 INFO L225 Difference]: With dead ends: 4002 [2022-11-25 15:31:16,444 INFO L226 Difference]: Without dead ends: 2754 [2022-11-25 15:31:16,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:16,451 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 386 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:16,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1106 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-11-25 15:31:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2454. [2022-11-25 15:31:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2454 states, 1847 states have (on average 1.3134813210611802) internal successors, (2426), 1874 states have internal predecessors, (2426), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-11-25 15:31:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3214 transitions. [2022-11-25 15:31:16,902 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3214 transitions. Word has length 101 [2022-11-25 15:31:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:16,902 INFO L495 AbstractCegarLoop]: Abstraction has 2454 states and 3214 transitions. [2022-11-25 15:31:16,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3214 transitions. [2022-11-25 15:31:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:31:16,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:16,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:16,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 15:31:16,906 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1668969668, now seen corresponding path program 1 times [2022-11-25 15:31:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:16,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909690131] [2022-11-25 15:31:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:31:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:31:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:31:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:31:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 15:31:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 15:31:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909690131] [2022-11-25 15:31:17,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909690131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:17,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:17,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:31:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028924736] [2022-11-25 15:31:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:17,004 INFO L87 Difference]: Start difference. First operand 2454 states and 3214 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:17,925 INFO L93 Difference]: Finished difference Result 5884 states and 8066 transitions. [2022-11-25 15:31:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-25 15:31:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:17,953 INFO L225 Difference]: With dead ends: 5884 [2022-11-25 15:31:17,954 INFO L226 Difference]: Without dead ends: 3638 [2022-11-25 15:31:17,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:17,961 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 124 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:17,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 615 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-25 15:31:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2457. [2022-11-25 15:31:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1850 states have (on average 1.3129729729729729) internal successors, (2429), 1877 states have internal predecessors, (2429), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-11-25 15:31:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3217 transitions. [2022-11-25 15:31:18,436 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3217 transitions. Word has length 101 [2022-11-25 15:31:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:18,437 INFO L495 AbstractCegarLoop]: Abstraction has 2457 states and 3217 transitions. [2022-11-25 15:31:18,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3217 transitions. [2022-11-25 15:31:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 15:31:18,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:18,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:18,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 15:31:18,441 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1479038139, now seen corresponding path program 1 times [2022-11-25 15:31:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:18,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029939783] [2022-11-25 15:31:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:31:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:31:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:31:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:31:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-25 15:31:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 15:31:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:18,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029939783] [2022-11-25 15:31:18,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029939783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:18,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:18,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754307504] [2022-11-25 15:31:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:18,591 INFO L87 Difference]: Start difference. First operand 2457 states and 3217 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:19,419 INFO L93 Difference]: Finished difference Result 5921 states and 7812 transitions. [2022-11-25 15:31:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-11-25 15:31:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:19,445 INFO L225 Difference]: With dead ends: 5921 [2022-11-25 15:31:19,445 INFO L226 Difference]: Without dead ends: 3902 [2022-11-25 15:31:19,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:19,451 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 371 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:19,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1092 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:31:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2022-11-25 15:31:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3378. [2022-11-25 15:31:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2532 states have (on average 1.3092417061611374) internal successors, (3315), 2569 states have internal predecessors, (3315), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-11-25 15:31:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4417 transitions. [2022-11-25 15:31:20,119 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4417 transitions. Word has length 101 [2022-11-25 15:31:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:20,120 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4417 transitions. [2022-11-25 15:31:20,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4417 transitions. [2022-11-25 15:31:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 15:31:20,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:20,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:20,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 15:31:20,124 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1548196706, now seen corresponding path program 1 times [2022-11-25 15:31:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:20,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951301273] [2022-11-25 15:31:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:31:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:31:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:31:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:31:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:31:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 15:31:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951301273] [2022-11-25 15:31:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951301273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:20,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:20,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422126336] [2022-11-25 15:31:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:20,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:20,319 INFO L87 Difference]: Start difference. First operand 3378 states and 4417 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:21,198 INFO L93 Difference]: Finished difference Result 7053 states and 9443 transitions. [2022-11-25 15:31:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-25 15:31:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:21,218 INFO L225 Difference]: With dead ends: 7053 [2022-11-25 15:31:21,218 INFO L226 Difference]: Without dead ends: 3747 [2022-11-25 15:31:21,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:21,227 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 263 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:21,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 769 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2022-11-25 15:31:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 2997. [2022-11-25 15:31:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2228 states have (on average 1.3141831238779174) internal successors, (2928), 2252 states have internal predecessors, (2928), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-11-25 15:31:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 3932 transitions. [2022-11-25 15:31:21,817 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 3932 transitions. Word has length 102 [2022-11-25 15:31:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:21,817 INFO L495 AbstractCegarLoop]: Abstraction has 2997 states and 3932 transitions. [2022-11-25 15:31:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 3932 transitions. [2022-11-25 15:31:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 15:31:21,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:21,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:21,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 15:31:21,821 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash 111128838, now seen corresponding path program 1 times [2022-11-25 15:31:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:21,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268071343] [2022-11-25 15:31:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:21,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:31:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:31:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:31:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:31:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:31:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 15:31:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:21,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268071343] [2022-11-25 15:31:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268071343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:21,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:21,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:31:21,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856925489] [2022-11-25 15:31:21,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:31:21,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:31:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:21,892 INFO L87 Difference]: Start difference. First operand 2997 states and 3932 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:22,711 INFO L93 Difference]: Finished difference Result 6518 states and 8770 transitions. [2022-11-25 15:31:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:31:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-25 15:31:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:22,726 INFO L225 Difference]: With dead ends: 6518 [2022-11-25 15:31:22,726 INFO L226 Difference]: Without dead ends: 3702 [2022-11-25 15:31:22,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:31:22,734 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 124 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:22,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 609 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:31:22,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2022-11-25 15:31:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3004. [2022-11-25 15:31:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2235 states have (on average 1.313199105145414) internal successors, (2935), 2259 states have internal predecessors, (2935), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-11-25 15:31:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3939 transitions. [2022-11-25 15:31:23,313 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3939 transitions. Word has length 104 [2022-11-25 15:31:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:23,313 INFO L495 AbstractCegarLoop]: Abstraction has 3004 states and 3939 transitions. [2022-11-25 15:31:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3939 transitions. [2022-11-25 15:31:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 15:31:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:23,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 15:31:23,316 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822738, now seen corresponding path program 1 times [2022-11-25 15:31:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069440705] [2022-11-25 15:31:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:31:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:31:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:31:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:31:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:31:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-25 15:31:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:31:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069440705] [2022-11-25 15:31:23,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069440705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:23,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:23,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573854532] [2022-11-25 15:31:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:23,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:31:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:31:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:31:23,564 INFO L87 Difference]: Start difference. First operand 3004 states and 3939 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:24,299 INFO L93 Difference]: Finished difference Result 6504 states and 8760 transitions. [2022-11-25 15:31:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-11-25 15:31:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:24,314 INFO L225 Difference]: With dead ends: 6504 [2022-11-25 15:31:24,314 INFO L226 Difference]: Without dead ends: 3619 [2022-11-25 15:31:24,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:24,322 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 205 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:24,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 767 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2022-11-25 15:31:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 2761. [2022-11-25 15:31:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2051 states have (on average 1.3125304729400293) internal successors, (2692), 2070 states have internal predecessors, (2692), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-11-25 15:31:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3620 transitions. [2022-11-25 15:31:25,051 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3620 transitions. Word has length 104 [2022-11-25 15:31:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:25,051 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 3620 transitions. [2022-11-25 15:31:25,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 15:31:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3620 transitions. [2022-11-25 15:31:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-25 15:31:25,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:25,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:25,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 15:31:25,059 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:25,059 INFO L85 PathProgramCache]: Analyzing trace with hash -356244414, now seen corresponding path program 1 times [2022-11-25 15:31:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:25,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870510948] [2022-11-25 15:31:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:31:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-25 15:31:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:31:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:31:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:31:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:31:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-25 15:31:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-25 15:31:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 15:31:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:31:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 15:31:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 15:31:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 15:31:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 15:31:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:25,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870510948] [2022-11-25 15:31:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870510948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:31:25,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504932642] [2022-11-25 15:31:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:25,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:31:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:31:25,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:31:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:31:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:25,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:31:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 15:31:26,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:31:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-25 15:31:26,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504932642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:31:26,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:31:26,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-25 15:31:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934669441] [2022-11-25 15:31:26,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:31:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:31:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:31:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:31:26,198 INFO L87 Difference]: Start difference. First operand 2761 states and 3620 transitions. Second operand has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 12 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-25 15:31:30,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:30,618 INFO L93 Difference]: Finished difference Result 9042 states and 12692 transitions. [2022-11-25 15:31:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 15:31:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 12 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 154 [2022-11-25 15:31:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:30,641 INFO L225 Difference]: With dead ends: 9042 [2022-11-25 15:31:30,642 INFO L226 Difference]: Without dead ends: 6531 [2022-11-25 15:31:30,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 15:31:30,649 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 2635 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:30,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 2250 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 15:31:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2022-11-25 15:31:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 3488. [2022-11-25 15:31:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 2599 states have (on average 1.3039630627164294) internal successors, (3389), 2623 states have internal predecessors, (3389), 575 states have call successors, (575), 313 states have call predecessors, (575), 313 states have return successors, (575), 551 states have call predecessors, (575), 575 states have call successors, (575) [2022-11-25 15:31:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4539 transitions. [2022-11-25 15:31:31,509 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4539 transitions. Word has length 154 [2022-11-25 15:31:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:31,510 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 4539 transitions. [2022-11-25 15:31:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 12 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-11-25 15:31:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4539 transitions. [2022-11-25 15:31:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 15:31:31,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:31,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:31,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:31,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 15:31:31,733 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1132676121, now seen corresponding path program 1 times [2022-11-25 15:31:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:31,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774897900] [2022-11-25 15:31:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:31:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:31:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:31:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:31:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:31:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:31:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:31:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 15:31:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:31:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 15:31:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-25 15:31:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-25 15:31:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:31:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-25 15:31:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774897900] [2022-11-25 15:31:32,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774897900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:31:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104917320] [2022-11-25 15:31:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:32,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:31:32,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:31:32,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:31:32,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:31:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:32,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:31:32,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:31:32,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:31:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-25 15:31:32,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104917320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:31:32,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:31:32,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-11-25 15:31:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855026699] [2022-11-25 15:31:32,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:31:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 15:31:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 15:31:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:31:32,996 INFO L87 Difference]: Start difference. First operand 3488 states and 4539 transitions. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 15:31:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:45,418 INFO L93 Difference]: Finished difference Result 16159 states and 22016 transitions. [2022-11-25 15:31:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-25 15:31:45,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 163 [2022-11-25 15:31:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:45,465 INFO L225 Difference]: With dead ends: 16159 [2022-11-25 15:31:45,465 INFO L226 Difference]: Without dead ends: 12952 [2022-11-25 15:31:45,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 412 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5084 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-11-25 15:31:45,478 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 6054 mSDsluCounter, 11948 mSDsCounter, 0 mSdLazyCounter, 5822 mSolverCounterSat, 4053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6054 SdHoareTripleChecker+Valid, 13375 SdHoareTripleChecker+Invalid, 9875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4053 IncrementalHoareTripleChecker+Valid, 5822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6054 Valid, 13375 Invalid, 9875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4053 Valid, 5822 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-25 15:31:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12952 states. [2022-11-25 15:31:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12952 to 6128. [2022-11-25 15:31:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 4571 states have (on average 1.3075913366878145) internal successors, (5977), 4612 states have internal predecessors, (5977), 1005 states have call successors, (1005), 551 states have call predecessors, (1005), 551 states have return successors, (1005), 964 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-11-25 15:31:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 7987 transitions. [2022-11-25 15:31:47,035 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 7987 transitions. Word has length 163 [2022-11-25 15:31:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:47,036 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 7987 transitions. [2022-11-25 15:31:47,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 15:31:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 7987 transitions. [2022-11-25 15:31:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-25 15:31:47,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:47,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:47,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:47,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 15:31:47,252 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 907912493, now seen corresponding path program 1 times [2022-11-25 15:31:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147012] [2022-11-25 15:31:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:31:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:31:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:31:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:31:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:31:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:31:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:31:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:31:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 15:31:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 15:31:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:31:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:31:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 15:31:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-25 15:31:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147012] [2022-11-25 15:31:47,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:47,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:47,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:31:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660267931] [2022-11-25 15:31:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:47,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:31:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:31:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:31:47,504 INFO L87 Difference]: Start difference. First operand 6128 states and 7987 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 15:31:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:50,823 INFO L93 Difference]: Finished difference Result 20280 states and 27143 transitions. [2022-11-25 15:31:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:31:50,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 165 [2022-11-25 15:31:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:50,877 INFO L225 Difference]: With dead ends: 20280 [2022-11-25 15:31:50,877 INFO L226 Difference]: Without dead ends: 14517 [2022-11-25 15:31:50,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:31:50,893 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 607 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:50,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2587 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:31:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14517 states. [2022-11-25 15:31:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14517 to 8321. [2022-11-25 15:31:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8321 states, 6158 states have (on average 1.304969145826567) internal successors, (8036), 6216 states have internal predecessors, (8036), 1408 states have call successors, (1408), 754 states have call predecessors, (1408), 754 states have return successors, (1408), 1350 states have call predecessors, (1408), 1408 states have call successors, (1408) [2022-11-25 15:31:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8321 states to 8321 states and 10852 transitions. [2022-11-25 15:31:52,601 INFO L78 Accepts]: Start accepts. Automaton has 8321 states and 10852 transitions. Word has length 165 [2022-11-25 15:31:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:52,601 INFO L495 AbstractCegarLoop]: Abstraction has 8321 states and 10852 transitions. [2022-11-25 15:31:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 15:31:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8321 states and 10852 transitions. [2022-11-25 15:31:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:31:52,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:52,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 15:31:52,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1340445774, now seen corresponding path program 1 times [2022-11-25 15:31:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:52,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824148889] [2022-11-25 15:31:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:31:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:31:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:31:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:31:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:31:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:31:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:31:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:31:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-25 15:31:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:31:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 15:31:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-25 15:31:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-25 15:31:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 15:31:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824148889] [2022-11-25 15:31:53,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824148889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:31:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281026381] [2022-11-25 15:31:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:31:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:31:53,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:31:53,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:31:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:53,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:31:53,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 15:31:53,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:31:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-25 15:31:53,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281026381] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:31:53,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:31:53,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-11-25 15:31:53,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328996599] [2022-11-25 15:31:53,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:53,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:31:53,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:53,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:31:53,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:31:53,833 INFO L87 Difference]: Start difference. First operand 8321 states and 10852 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 15:31:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:55,234 INFO L93 Difference]: Finished difference Result 13606 states and 17797 transitions. [2022-11-25 15:31:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:31:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 167 [2022-11-25 15:31:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:55,256 INFO L225 Difference]: With dead ends: 13606 [2022-11-25 15:31:55,256 INFO L226 Difference]: Without dead ends: 5482 [2022-11-25 15:31:55,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:31:55,274 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:55,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 741 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:31:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-11-25 15:31:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5248. [2022-11-25 15:31:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 3886 states have (on average 1.304426145136387) internal successors, (5069), 3920 states have internal predecessors, (5069), 891 states have call successors, (891), 470 states have call predecessors, (891), 470 states have return successors, (891), 857 states have call predecessors, (891), 891 states have call successors, (891) [2022-11-25 15:31:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 6851 transitions. [2022-11-25 15:31:56,215 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 6851 transitions. Word has length 167 [2022-11-25 15:31:56,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:56,216 INFO L495 AbstractCegarLoop]: Abstraction has 5248 states and 6851 transitions. [2022-11-25 15:31:56,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 15:31:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 6851 transitions. [2022-11-25 15:31:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 15:31:56,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:56,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:56,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-25 15:31:56,438 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:31:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 960207297, now seen corresponding path program 1 times [2022-11-25 15:31:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:31:56,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179959890] [2022-11-25 15:31:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:31:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:31:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:31:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:31:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:31:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:31:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:31:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:31:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:31:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:31:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 15:31:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 15:31:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-25 15:31:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-25 15:31:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-25 15:31:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 15:31:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 15:31:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:31:57,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179959890] [2022-11-25 15:31:57,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179959890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:31:57,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179681256] [2022-11-25 15:31:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:57,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:31:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:31:57,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:31:57,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:31:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:57,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 15:31:57,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:31:58,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:31:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 15:31:58,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179681256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:31:58,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:31:58,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 23 [2022-11-25 15:31:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393842541] [2022-11-25 15:31:58,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:31:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 15:31:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:31:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 15:31:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:31:58,977 INFO L87 Difference]: Start difference. First operand 5248 states and 6851 transitions. Second operand has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-11-25 15:32:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:23,962 INFO L93 Difference]: Finished difference Result 23839 states and 33713 transitions. [2022-11-25 15:32:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-11-25 15:32:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 168 [2022-11-25 15:32:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:24,038 INFO L225 Difference]: With dead ends: 23839 [2022-11-25 15:32:24,039 INFO L226 Difference]: Without dead ends: 18844 [2022-11-25 15:32:24,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31873 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=7428, Invalid=66284, Unknown=0, NotChecked=0, Total=73712 [2022-11-25 15:32:24,065 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 5566 mSDsluCounter, 5395 mSDsCounter, 0 mSdLazyCounter, 7415 mSolverCounterSat, 4276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5566 SdHoareTripleChecker+Valid, 6157 SdHoareTripleChecker+Invalid, 11691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4276 IncrementalHoareTripleChecker+Valid, 7415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:24,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5566 Valid, 6157 Invalid, 11691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4276 Valid, 7415 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-25 15:32:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18844 states. [2022-11-25 15:32:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18844 to 9058. [2022-11-25 15:32:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9058 states, 6825 states have (on average 1.3084249084249084) internal successors, (8930), 6879 states have internal predecessors, (8930), 1439 states have call successors, (1439), 793 states have call predecessors, (1439), 793 states have return successors, (1439), 1385 states have call predecessors, (1439), 1439 states have call successors, (1439) [2022-11-25 15:32:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9058 states to 9058 states and 11808 transitions. [2022-11-25 15:32:26,542 INFO L78 Accepts]: Start accepts. Automaton has 9058 states and 11808 transitions. Word has length 168 [2022-11-25 15:32:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:26,543 INFO L495 AbstractCegarLoop]: Abstraction has 9058 states and 11808 transitions. [2022-11-25 15:32:26,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-11-25 15:32:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 9058 states and 11808 transitions. [2022-11-25 15:32:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 15:32:26,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:26,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:26,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 15:32:26,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:26,762 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1430058926, now seen corresponding path program 1 times [2022-11-25 15:32:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:26,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932677358] [2022-11-25 15:32:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:32:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:32:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:32:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:32:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:32:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:32:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:32:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:32:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 15:32:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:32:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 15:32:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 15:32:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:32:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-25 15:32:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932677358] [2022-11-25 15:32:27,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932677358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:32:27,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450636254] [2022-11-25 15:32:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:27,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:27,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:32:27,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:32:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:27,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:32:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 90 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:32:27,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-25 15:32:27,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450636254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:32:27,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:32:27,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-25 15:32:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577757286] [2022-11-25 15:32:27,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:32:27,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:32:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:27,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:32:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:32:27,703 INFO L87 Difference]: Start difference. First operand 9058 states and 11808 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-25 15:32:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:32,162 INFO L93 Difference]: Finished difference Result 27636 states and 36139 transitions. [2022-11-25 15:32:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:32:32,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 170 [2022-11-25 15:32:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:32,223 INFO L225 Difference]: With dead ends: 27636 [2022-11-25 15:32:32,223 INFO L226 Difference]: Without dead ends: 18842 [2022-11-25 15:32:32,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-25 15:32:32,238 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 510 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2581 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:32:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18842 states. [2022-11-25 15:32:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18842 to 13442. [2022-11-25 15:32:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13442 states, 10148 states have (on average 1.286854552621206) internal successors, (13059), 10247 states have internal predecessors, (13059), 2104 states have call successors, (2104), 1189 states have call predecessors, (2104), 1189 states have return successors, (2104), 2005 states have call predecessors, (2104), 2104 states have call successors, (2104) [2022-11-25 15:32:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13442 states to 13442 states and 17267 transitions. [2022-11-25 15:32:35,115 INFO L78 Accepts]: Start accepts. Automaton has 13442 states and 17267 transitions. Word has length 170 [2022-11-25 15:32:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:35,115 INFO L495 AbstractCegarLoop]: Abstraction has 13442 states and 17267 transitions. [2022-11-25 15:32:35,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 9 states have internal predecessors, (156), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-25 15:32:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 13442 states and 17267 transitions. [2022-11-25 15:32:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 15:32:35,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:35,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:35,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:32:35,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:35,334 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2056544783, now seen corresponding path program 1 times [2022-11-25 15:32:35,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:35,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026442068] [2022-11-25 15:32:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:32:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:32:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:32:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:32:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:32:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:32:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:32:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:32:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:32:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-25 15:32:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 15:32:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 15:32:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 15:32:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:32:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:32:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 15:32:36,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026442068] [2022-11-25 15:32:36,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026442068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:32:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950992058] [2022-11-25 15:32:36,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:36,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:36,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:36,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:32:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:32:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:36,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 15:32:36,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 72 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:32:37,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-25 15:32:39,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950992058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:32:39,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:32:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 27 [2022-11-25 15:32:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329344632] [2022-11-25 15:32:39,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:32:39,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 15:32:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 15:32:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:32:39,427 INFO L87 Difference]: Start difference. First operand 13442 states and 17267 transitions. Second operand has 27 states, 27 states have (on average 9.88888888888889) internal successors, (267), 27 states have internal predecessors, (267), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-25 15:33:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:25,914 INFO L93 Difference]: Finished difference Result 36858 states and 50880 transitions. [2022-11-25 15:33:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-25 15:33:25,914 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.88888888888889) internal successors, (267), 27 states have internal predecessors, (267), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 169 [2022-11-25 15:33:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:26,011 INFO L225 Difference]: With dead ends: 36858 [2022-11-25 15:33:26,012 INFO L226 Difference]: Without dead ends: 25074 [2022-11-25 15:33:26,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21953 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=7376, Invalid=43474, Unknown=0, NotChecked=0, Total=50850 [2022-11-25 15:33:26,037 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 7965 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 6265 mSolverCounterSat, 5103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7966 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 11368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5103 IncrementalHoareTripleChecker+Valid, 6265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:26,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7966 Valid, 5659 Invalid, 11368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5103 Valid, 6265 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 15:33:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25074 states. [2022-11-25 15:33:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25074 to 11632. [2022-11-25 15:33:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 8830 states have (on average 1.2900339750849377) internal successors, (11391), 8901 states have internal predecessors, (11391), 1778 states have call successors, (1778), 1023 states have call predecessors, (1778), 1023 states have return successors, (1778), 1707 states have call predecessors, (1778), 1778 states have call successors, (1778) [2022-11-25 15:33:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 14947 transitions. [2022-11-25 15:33:29,474 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 14947 transitions. Word has length 169 [2022-11-25 15:33:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:29,475 INFO L495 AbstractCegarLoop]: Abstraction has 11632 states and 14947 transitions. [2022-11-25 15:33:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.88888888888889) internal successors, (267), 27 states have internal predecessors, (267), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-11-25 15:33:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 14947 transitions. [2022-11-25 15:33:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-25 15:33:29,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:29,482 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:29,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-25 15:33:29,688 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:29,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 613298860, now seen corresponding path program 1 times [2022-11-25 15:33:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:29,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570405953] [2022-11-25 15:33:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:33:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:33:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:33:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:33:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:33:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:33:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:33:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:33:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 15:33:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 15:33:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-25 15:33:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 15:33:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:33:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-25 15:33:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 15:33:29,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570405953] [2022-11-25 15:33:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570405953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:29,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:29,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029204] [2022-11-25 15:33:29,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:29,911 INFO L87 Difference]: Start difference. First operand 11632 states and 14947 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 15:33:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:37,283 INFO L93 Difference]: Finished difference Result 33240 states and 43979 transitions. [2022-11-25 15:33:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:33:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2022-11-25 15:33:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:37,370 INFO L225 Difference]: With dead ends: 33240 [2022-11-25 15:33:37,370 INFO L226 Difference]: Without dead ends: 24365 [2022-11-25 15:33:37,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:33:37,388 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 499 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:37,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2457 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:33:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24365 states. [2022-11-25 15:33:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24365 to 17200. [2022-11-25 15:33:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17200 states, 12863 states have (on average 1.2814273497628859) internal successors, (16483), 12983 states have internal predecessors, (16483), 2776 states have call successors, (2776), 1560 states have call predecessors, (2776), 1560 states have return successors, (2776), 2656 states have call predecessors, (2776), 2776 states have call successors, (2776) [2022-11-25 15:33:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17200 states to 17200 states and 22035 transitions. [2022-11-25 15:33:42,626 INFO L78 Accepts]: Start accepts. Automaton has 17200 states and 22035 transitions. Word has length 172 [2022-11-25 15:33:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 17200 states and 22035 transitions. [2022-11-25 15:33:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 15:33:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 17200 states and 22035 transitions. [2022-11-25 15:33:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-25 15:33:42,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:42,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:42,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 15:33:42,638 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 571973743, now seen corresponding path program 1 times [2022-11-25 15:33:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752831253] [2022-11-25 15:33:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:33:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:33:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:33:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:33:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:33:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:33:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:33:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 15:33:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 15:33:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-25 15:33:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 15:33:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:33:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:33:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 15:33:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 15:33:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 15:33:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:43,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752831253] [2022-11-25 15:33:43,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752831253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:33:43,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490433412] [2022-11-25 15:33:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:43,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:33:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:33:43,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:33:43,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:33:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:43,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:33:43,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 15:33:43,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:33:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-25 15:33:43,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490433412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:33:43,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:33:43,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2022-11-25 15:33:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783980900] [2022-11-25 15:33:43,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:33:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 15:33:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 15:33:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:33:43,955 INFO L87 Difference]: Start difference. First operand 17200 states and 22035 transitions. Second operand has 15 states, 15 states have (on average 12.933333333333334) internal successors, (194), 14 states have internal predecessors, (194), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-25 15:33:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:58,227 INFO L93 Difference]: Finished difference Result 44554 states and 59798 transitions. [2022-11-25 15:33:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 15:33:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.933333333333334) internal successors, (194), 14 states have internal predecessors, (194), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) Word has length 173 [2022-11-25 15:33:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:58,324 INFO L225 Difference]: With dead ends: 44554 [2022-11-25 15:33:58,325 INFO L226 Difference]: Without dead ends: 27534 [2022-11-25 15:33:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 15:33:58,354 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1631 mSDsluCounter, 6774 mSDsCounter, 0 mSdLazyCounter, 4336 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 7547 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 4336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:58,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 7547 Invalid, 5248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [912 Valid, 4336 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 15:33:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27534 states. [2022-11-25 15:34:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27534 to 17308. [2022-11-25 15:34:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17308 states, 12943 states have (on average 1.2809240516109093) internal successors, (16579), 13065 states have internal predecessors, (16579), 2792 states have call successors, (2792), 1572 states have call predecessors, (2792), 1572 states have return successors, (2792), 2670 states have call predecessors, (2792), 2792 states have call successors, (2792) [2022-11-25 15:34:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17308 states to 17308 states and 22163 transitions. [2022-11-25 15:34:03,484 INFO L78 Accepts]: Start accepts. Automaton has 17308 states and 22163 transitions. Word has length 173 [2022-11-25 15:34:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:03,485 INFO L495 AbstractCegarLoop]: Abstraction has 17308 states and 22163 transitions. [2022-11-25 15:34:03,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.933333333333334) internal successors, (194), 14 states have internal predecessors, (194), 6 states have call successors, (35), 4 states have call predecessors, (35), 6 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-25 15:34:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 17308 states and 22163 transitions. [2022-11-25 15:34:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-25 15:34:03,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:03,500 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:03,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:03,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-25 15:34:03,708 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:34:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1533406230, now seen corresponding path program 1 times [2022-11-25 15:34:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:03,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256996211] [2022-11-25 15:34:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:34:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:34:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:34:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:34:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:34:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:34:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:34:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:34:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:34:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:34:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 15:34:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-25 15:34:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-25 15:34:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 15:34:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-25 15:34:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 15:34:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:34:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-25 15:34:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:04,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256996211] [2022-11-25 15:34:04,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256996211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:04,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182830243] [2022-11-25 15:34:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:04,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:04,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:04,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:34:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:04,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:34:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 15:34:05,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 15:34:05,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182830243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:05,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:34:05,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2022-11-25 15:34:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215666164] [2022-11-25 15:34:05,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:05,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 15:34:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:05,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 15:34:05,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:34:05,209 INFO L87 Difference]: Start difference. First operand 17308 states and 22163 transitions. Second operand has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-11-25 15:34:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:18,295 INFO L93 Difference]: Finished difference Result 43375 states and 58031 transitions. [2022-11-25 15:34:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-25 15:34:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) Word has length 182 [2022-11-25 15:34:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:18,384 INFO L225 Difference]: With dead ends: 43375 [2022-11-25 15:34:18,385 INFO L226 Difference]: Without dead ends: 26247 [2022-11-25 15:34:18,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 403 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=389, Invalid=2473, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 15:34:18,412 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1483 mSDsluCounter, 5384 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 6059 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:18,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 6059 Invalid, 4440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 15:34:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26247 states. [2022-11-25 15:34:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26247 to 17284. [2022-11-25 15:34:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17284 states, 12927 states have (on average 1.2803434671617544) internal successors, (16551), 13049 states have internal predecessors, (16551), 2788 states have call successors, (2788), 1568 states have call predecessors, (2788), 1568 states have return successors, (2788), 2666 states have call predecessors, (2788), 2788 states have call successors, (2788) [2022-11-25 15:34:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17284 states to 17284 states and 22127 transitions. [2022-11-25 15:34:23,602 INFO L78 Accepts]: Start accepts. Automaton has 17284 states and 22127 transitions. Word has length 182 [2022-11-25 15:34:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:23,602 INFO L495 AbstractCegarLoop]: Abstraction has 17284 states and 22127 transitions. [2022-11-25 15:34:23,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.733333333333333) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-11-25 15:34:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17284 states and 22127 transitions. [2022-11-25 15:34:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-25 15:34:23,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:23,611 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:23,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-25 15:34:23,823 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:34:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -994504315, now seen corresponding path program 1 times [2022-11-25 15:34:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:23,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451640858] [2022-11-25 15:34:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:34:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:34:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:34:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:34:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:34:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:34:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:34:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:34:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:34:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:34:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 15:34:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 15:34:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 15:34:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-25 15:34:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-25 15:34:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 15:34:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:34:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-25 15:34:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-25 15:34:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451640858] [2022-11-25 15:34:24,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451640858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201529905] [2022-11-25 15:34:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:24,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:24,440 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:24,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 15:34:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:24,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:34:24,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-25 15:34:24,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:34:24,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201529905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:24,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:34:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-25 15:34:24,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735405176] [2022-11-25 15:34:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:34:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:34:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:34:24,888 INFO L87 Difference]: Start difference. First operand 17284 states and 22127 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 15:34:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:31,633 INFO L93 Difference]: Finished difference Result 38151 states and 50142 transitions. [2022-11-25 15:34:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:34:31,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 190 [2022-11-25 15:34:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:31,680 INFO L225 Difference]: With dead ends: 38151 [2022-11-25 15:34:31,681 INFO L226 Difference]: Without dead ends: 21505 [2022-11-25 15:34:31,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:34:31,706 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 609 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:31,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1746 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:34:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21505 states. [2022-11-25 15:34:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21505 to 17284. [2022-11-25 15:34:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17284 states, 12927 states have (on average 1.2732265800263016) internal successors, (16459), 13049 states have internal predecessors, (16459), 2788 states have call successors, (2788), 1568 states have call predecessors, (2788), 1568 states have return successors, (2788), 2666 states have call predecessors, (2788), 2788 states have call successors, (2788) [2022-11-25 15:34:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17284 states to 17284 states and 22035 transitions. [2022-11-25 15:34:36,680 INFO L78 Accepts]: Start accepts. Automaton has 17284 states and 22035 transitions. Word has length 190 [2022-11-25 15:34:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:36,680 INFO L495 AbstractCegarLoop]: Abstraction has 17284 states and 22035 transitions. [2022-11-25 15:34:36,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 15:34:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 17284 states and 22035 transitions. [2022-11-25 15:34:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-25 15:34:36,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:36,687 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:36,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-25 15:34:36,894 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:34:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash 388222531, now seen corresponding path program 1 times [2022-11-25 15:34:36,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:36,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384456667] [2022-11-25 15:34:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:36,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:34:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:34:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:34:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:34:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:34:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:34:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:34:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:34:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:34:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:34:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:34:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:34:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:34:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-25 15:34:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-25 15:34:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-25 15:34:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-25 15:34:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:34:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-25 15:34:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384456667] [2022-11-25 15:34:37,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384456667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:34:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795231639] [2022-11-25 15:34:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:37,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:34:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:34:37,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:34:37,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 15:34:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:37,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:34:37,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:34:37,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-25 15:34:38,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795231639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:38,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:34:38,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-11-25 15:34:38,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24027664] [2022-11-25 15:34:38,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:34:38,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:34:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:34:38,198 INFO L87 Difference]: Start difference. First operand 17284 states and 22035 transitions. Second operand has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-25 15:34:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:44,940 INFO L93 Difference]: Finished difference Result 33347 states and 42910 transitions. [2022-11-25 15:34:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:34:44,940 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 194 [2022-11-25 15:34:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:44,987 INFO L225 Difference]: With dead ends: 33347 [2022-11-25 15:34:44,987 INFO L226 Difference]: Without dead ends: 19536 [2022-11-25 15:34:45,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:34:45,004 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 810 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:45,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 4466 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 15:34:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19536 states. [2022-11-25 15:34:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19536 to 17284. [2022-11-25 15:34:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17284 states, 12927 states have (on average 1.268662489363348) internal successors, (16400), 13049 states have internal predecessors, (16400), 2788 states have call successors, (2788), 1568 states have call predecessors, (2788), 1568 states have return successors, (2788), 2666 states have call predecessors, (2788), 2788 states have call successors, (2788) [2022-11-25 15:34:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17284 states to 17284 states and 21976 transitions. [2022-11-25 15:34:50,197 INFO L78 Accepts]: Start accepts. Automaton has 17284 states and 21976 transitions. Word has length 194 [2022-11-25 15:34:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 17284 states and 21976 transitions. [2022-11-25 15:34:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 11 states have internal predecessors, (191), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-25 15:34:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17284 states and 21976 transitions. [2022-11-25 15:34:50,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-25 15:34:50,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:50,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:34:50,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-25 15:34:50,405 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:34:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1254416357, now seen corresponding path program 1 times [2022-11-25 15:34:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:50,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344968582] [2022-11-25 15:34:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:34:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:34:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:34:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:34:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:34:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:34:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:34:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:34:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:34:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:34:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:34:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:34:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:34:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-25 15:34:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-25 15:34:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-25 15:34:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-25 15:34:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:34:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-25 15:34:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344968582] [2022-11-25 15:34:50,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344968582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:50,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:50,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:34:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126368358] [2022-11-25 15:34:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:50,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:34:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:34:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:34:50,809 INFO L87 Difference]: Start difference. First operand 17284 states and 21976 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 15:34:58,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:58,112 INFO L93 Difference]: Finished difference Result 34653 states and 45267 transitions. [2022-11-25 15:34:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:34:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 194 [2022-11-25 15:34:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:58,159 INFO L225 Difference]: With dead ends: 34653 [2022-11-25 15:34:58,160 INFO L226 Difference]: Without dead ends: 21021 [2022-11-25 15:34:58,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:34:58,177 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 599 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:58,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1945 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:34:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21021 states. [2022-11-25 15:35:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21021 to 17272. [2022-11-25 15:35:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17272 states, 12915 states have (on average 1.267053813395277) internal successors, (16364), 13037 states have internal predecessors, (16364), 2788 states have call successors, (2788), 1568 states have call predecessors, (2788), 1568 states have return successors, (2788), 2666 states have call predecessors, (2788), 2788 states have call successors, (2788) [2022-11-25 15:35:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17272 states to 17272 states and 21940 transitions. [2022-11-25 15:35:04,268 INFO L78 Accepts]: Start accepts. Automaton has 17272 states and 21940 transitions. Word has length 194 [2022-11-25 15:35:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 17272 states and 21940 transitions. [2022-11-25 15:35:04,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 15:35:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17272 states and 21940 transitions. [2022-11-25 15:35:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-25 15:35:04,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:04,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-25 15:35:04,279 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:35:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash -721671860, now seen corresponding path program 1 times [2022-11-25 15:35:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:04,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505097159] [2022-11-25 15:35:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:35:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:35:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:35:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:35:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:35:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:35:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:35:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:35:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:35:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:35:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:35:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:35:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-25 15:35:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:35:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-25 15:35:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-25 15:35:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-25 15:35:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-25 15:35:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-25 15:35:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:04,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505097159] [2022-11-25 15:35:04,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505097159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:04,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:04,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:35:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579895942] [2022-11-25 15:35:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:35:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:35:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:35:04,445 INFO L87 Difference]: Start difference. First operand 17272 states and 21940 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 15:35:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:09,902 INFO L93 Difference]: Finished difference Result 31994 states and 41000 transitions. [2022-11-25 15:35:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:09,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 196 [2022-11-25 15:35:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:09,935 INFO L225 Difference]: With dead ends: 31994 [2022-11-25 15:35:09,935 INFO L226 Difference]: Without dead ends: 18378 [2022-11-25 15:35:09,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:09,947 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 348 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:09,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1062 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2022-11-25 15:35:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 17802. [2022-11-25 15:35:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17802 states, 13294 states have (on average 1.266736873777644) internal successors, (16840), 13421 states have internal predecessors, (16840), 2883 states have call successors, (2883), 1624 states have call predecessors, (2883), 1624 states have return successors, (2883), 2756 states have call predecessors, (2883), 2883 states have call successors, (2883) [2022-11-25 15:35:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 22606 transitions. [2022-11-25 15:35:15,267 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 22606 transitions. Word has length 196 [2022-11-25 15:35:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:15,268 INFO L495 AbstractCegarLoop]: Abstraction has 17802 states and 22606 transitions. [2022-11-25 15:35:15,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 15:35:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 22606 transitions. [2022-11-25 15:35:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-25 15:35:15,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:15,278 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-25 15:35:15,278 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:35:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1914279925, now seen corresponding path program 1 times [2022-11-25 15:35:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:15,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155762773] [2022-11-25 15:35:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:35:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:35:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:35:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:35:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:35:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:35:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:35:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:35:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:35:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-25 15:35:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-25 15:35:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-25 15:35:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-25 15:35:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:35:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-25 15:35:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 15:35:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:35:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-25 15:35:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-25 15:35:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 15:35:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:15,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155762773] [2022-11-25 15:35:15,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155762773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:15,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81726470] [2022-11-25 15:35:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:15,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:35:15,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 15:35:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:16,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:35:16,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 15:35:16,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-25 15:35:16,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81726470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:16,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:35:16,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-11-25 15:35:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603441709] [2022-11-25 15:35:16,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:16,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:35:16,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:35:16,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:35:16,517 INFO L87 Difference]: Start difference. First operand 17802 states and 22606 transitions. Second operand has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2022-11-25 15:35:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:33,214 INFO L93 Difference]: Finished difference Result 50926 states and 68643 transitions. [2022-11-25 15:35:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 15:35:33,215 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) Word has length 198 [2022-11-25 15:35:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:33,305 INFO L225 Difference]: With dead ends: 50926 [2022-11-25 15:35:33,305 INFO L226 Difference]: Without dead ends: 33987 [2022-11-25 15:35:33,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=459, Invalid=2733, Unknown=0, NotChecked=0, Total=3192 [2022-11-25 15:35:33,329 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 2243 mSDsluCounter, 5322 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:33,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 6078 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 15:35:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33987 states. [2022-11-25 15:35:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33987 to 19841. [2022-11-25 15:35:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19841 states, 14760 states have (on average 1.2693766937669377) internal successors, (18736), 14907 states have internal predecessors, (18736), 3254 states have call successors, (3254), 1826 states have call predecessors, (3254), 1826 states have return successors, (3254), 3107 states have call predecessors, (3254), 3254 states have call successors, (3254) [2022-11-25 15:35:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19841 states to 19841 states and 25244 transitions. [2022-11-25 15:35:39,254 INFO L78 Accepts]: Start accepts. Automaton has 19841 states and 25244 transitions. Word has length 198 [2022-11-25 15:35:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 19841 states and 25244 transitions. [2022-11-25 15:35:39,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.642857142857142) internal successors, (219), 13 states have internal predecessors, (219), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2022-11-25 15:35:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19841 states and 25244 transitions. [2022-11-25 15:35:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-25 15:35:39,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:39,259 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:39,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-25 15:35:39,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:39,460 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:35:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash 464833963, now seen corresponding path program 1 times [2022-11-25 15:35:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:39,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174312916] [2022-11-25 15:35:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:39,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:35:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:35:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:35:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:35:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:35:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:35:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:35:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:35:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:35:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:35:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:35:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-25 15:35:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-25 15:35:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 15:35:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:35:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-25 15:35:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-25 15:35:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-25 15:35:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-25 15:35:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174312916] [2022-11-25 15:35:40,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174312916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372962475] [2022-11-25 15:35:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:40,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:40,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:35:40,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 15:35:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:35:40,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 47 proven. 62 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 15:35:40,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-25 15:35:40,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372962475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:40,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:35:40,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-11-25 15:35:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086382778] [2022-11-25 15:35:40,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:40,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:35:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:35:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:35:40,953 INFO L87 Difference]: Start difference. First operand 19841 states and 25244 transitions. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 11 states have internal predecessors, (197), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-25 15:35:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:51,680 INFO L93 Difference]: Finished difference Result 42073 states and 55345 transitions. [2022-11-25 15:35:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:35:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 11 states have internal predecessors, (197), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 201 [2022-11-25 15:35:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:51,747 INFO L225 Difference]: With dead ends: 42073 [2022-11-25 15:35:51,747 INFO L226 Difference]: Without dead ends: 25019 [2022-11-25 15:35:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 437 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:35:51,768 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1001 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 4675 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:51,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 4675 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 15:35:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25019 states. [2022-11-25 15:35:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25019 to 17490. [2022-11-25 15:35:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17490 states, 13056 states have (on average 1.2634037990196079) internal successors, (16495), 13187 states have internal predecessors, (16495), 2780 states have call successors, (2780), 1653 states have call predecessors, (2780), 1653 states have return successors, (2780), 2649 states have call predecessors, (2780), 2780 states have call successors, (2780) [2022-11-25 15:35:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17490 states to 17490 states and 22055 transitions. [2022-11-25 15:35:57,132 INFO L78 Accepts]: Start accepts. Automaton has 17490 states and 22055 transitions. Word has length 201 [2022-11-25 15:35:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:57,133 INFO L495 AbstractCegarLoop]: Abstraction has 17490 states and 22055 transitions. [2022-11-25 15:35:57,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 11 states have internal predecessors, (197), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-11-25 15:35:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 17490 states and 22055 transitions. [2022-11-25 15:35:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-25 15:35:57,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:57,139 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:57,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:57,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:57,339 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:35:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash -27216781, now seen corresponding path program 1 times [2022-11-25 15:35:57,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:35:57,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730033302] [2022-11-25 15:35:57,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:57,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:35:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:35:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:35:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 15:35:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:35:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:35:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:35:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-25 15:35:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-25 15:35:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:35:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:35:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:35:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:35:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:35:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-25 15:35:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-25 15:35:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-25 15:35:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-25 15:35:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-25 15:35:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-25 15:35:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-25 15:35:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:35:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730033302] [2022-11-25 15:35:57,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730033302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:57,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185988252] [2022-11-25 15:35:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:57,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:35:57,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:57,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:35:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 15:35:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:58,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:35:58,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 42 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 15:35:58,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-25 15:35:58,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185988252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:58,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:35:58,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-11-25 15:35:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687664575] [2022-11-25 15:35:58,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:58,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:35:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:35:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:35:58,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-25 15:35:58,735 INFO L87 Difference]: Start difference. First operand 17490 states and 22055 transitions. Second operand has 17 states, 17 states have (on average 14.588235294117647) internal successors, (248), 15 states have internal predecessors, (248), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-11-25 15:36:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:16,695 INFO L93 Difference]: Finished difference Result 46448 states and 60215 transitions. [2022-11-25 15:36:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-25 15:36:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.588235294117647) internal successors, (248), 15 states have internal predecessors, (248), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 202 [2022-11-25 15:36:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:16,758 INFO L225 Difference]: With dead ends: 46448 [2022-11-25 15:36:16,758 INFO L226 Difference]: Without dead ends: 31467 [2022-11-25 15:36:16,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2516 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-11-25 15:36:16,776 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 3375 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 1810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 4707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1810 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:16,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3375 Valid, 7843 Invalid, 4707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1810 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 15:36:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31467 states. [2022-11-25 15:36:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31467 to 16642. [2022-11-25 15:36:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16642 states, 12490 states have (on average 1.25484387510008) internal successors, (15673), 12611 states have internal predecessors, (15673), 2566 states have call successors, (2566), 1585 states have call predecessors, (2566), 1585 states have return successors, (2566), 2445 states have call predecessors, (2566), 2566 states have call successors, (2566) [2022-11-25 15:36:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16642 states to 16642 states and 20805 transitions. [2022-11-25 15:36:22,446 INFO L78 Accepts]: Start accepts. Automaton has 16642 states and 20805 transitions. Word has length 202 [2022-11-25 15:36:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:22,446 INFO L495 AbstractCegarLoop]: Abstraction has 16642 states and 20805 transitions. [2022-11-25 15:36:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.588235294117647) internal successors, (248), 15 states have internal predecessors, (248), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-11-25 15:36:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 16642 states and 20805 transitions. [2022-11-25 15:36:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-25 15:36:22,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:22,451 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:22,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:22,652 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:36:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 76586572, now seen corresponding path program 1 times [2022-11-25 15:36:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749171946] [2022-11-25 15:36:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:36:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:36:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:36:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:36:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:36:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:36:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:36:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:36:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:36:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:36:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 15:36:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 15:36:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 15:36:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:36:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:36:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-25 15:36:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:36:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-25 15:36:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-25 15:36:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-25 15:36:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-25 15:36:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749171946] [2022-11-25 15:36:23,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749171946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417482893] [2022-11-25 15:36:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:23,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 15:36:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 15:36:23,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 102 proven. 27 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:36:24,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-25 15:36:24,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417482893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:24,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:24,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2022-11-25 15:36:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095361576] [2022-11-25 15:36:24,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:24,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:36:24,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:36:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:36:24,770 INFO L87 Difference]: Start difference. First operand 16642 states and 20805 transitions. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-25 15:36:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:37,505 INFO L93 Difference]: Finished difference Result 35026 states and 45136 transitions. [2022-11-25 15:36:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-25 15:36:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) Word has length 206 [2022-11-25 15:36:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:37,545 INFO L225 Difference]: With dead ends: 35026 [2022-11-25 15:36:37,545 INFO L226 Difference]: Without dead ends: 20610 [2022-11-25 15:36:37,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=963, Invalid=2343, Unknown=0, NotChecked=0, Total=3306 [2022-11-25 15:36:37,560 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2508 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:37,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 2077 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 15:36:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20610 states. [2022-11-25 15:36:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20610 to 14836. [2022-11-25 15:36:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14836 states, 11198 states have (on average 1.2492409358814074) internal successors, (13989), 11304 states have internal predecessors, (13989), 2237 states have call successors, (2237), 1400 states have call predecessors, (2237), 1400 states have return successors, (2237), 2131 states have call predecessors, (2237), 2237 states have call successors, (2237) [2022-11-25 15:36:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14836 states to 14836 states and 18463 transitions. [2022-11-25 15:36:42,941 INFO L78 Accepts]: Start accepts. Automaton has 14836 states and 18463 transitions. Word has length 206 [2022-11-25 15:36:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:42,941 INFO L495 AbstractCegarLoop]: Abstraction has 14836 states and 18463 transitions. [2022-11-25 15:36:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 10 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2022-11-25 15:36:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 14836 states and 18463 transitions. [2022-11-25 15:36:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-25 15:36:42,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:42,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:43,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-25 15:36:43,155 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:36:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash 304150014, now seen corresponding path program 1 times [2022-11-25 15:36:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:43,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468708616] [2022-11-25 15:36:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:36:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:36:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:36:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:36:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:36:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:36:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:36:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:36:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:36:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:36:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 15:36:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 15:36:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 15:36:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-25 15:36:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-25 15:36:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-25 15:36:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-25 15:36:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-25 15:36:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:36:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-25 15:36:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-25 15:36:43,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:43,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468708616] [2022-11-25 15:36:43,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468708616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:43,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605485988] [2022-11-25 15:36:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:43,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:43,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:43,732 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:43,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 15:36:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:43,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 15:36:43,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 105 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-25 15:36:44,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-25 15:36:45,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605485988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:45,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:45,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2022-11-25 15:36:45,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883147202] [2022-11-25 15:36:45,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:45,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 15:36:45,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 15:36:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:36:45,234 INFO L87 Difference]: Start difference. First operand 14836 states and 18463 transitions. Second operand has 23 states, 23 states have (on average 14.0) internal successors, (322), 23 states have internal predecessors, (322), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2022-11-25 15:37:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:10,588 INFO L93 Difference]: Finished difference Result 47096 states and 61815 transitions. [2022-11-25 15:37:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-25 15:37:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.0) internal successors, (322), 23 states have internal predecessors, (322), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) Word has length 208 [2022-11-25 15:37:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:10,690 INFO L225 Difference]: With dead ends: 47096 [2022-11-25 15:37:10,691 INFO L226 Difference]: Without dead ends: 33216 [2022-11-25 15:37:10,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2693 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1486, Invalid=6524, Unknown=0, NotChecked=0, Total=8010 [2022-11-25 15:37:10,719 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 7171 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 1956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7171 SdHoareTripleChecker+Valid, 4516 SdHoareTripleChecker+Invalid, 6634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1956 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:10,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7171 Valid, 4516 Invalid, 6634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1956 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 15:37:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33216 states. [2022-11-25 15:37:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33216 to 19040. [2022-11-25 15:37:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19040 states, 14492 states have (on average 1.255520287054927) internal successors, (18195), 14619 states have internal predecessors, (18195), 2782 states have call successors, (2782), 1765 states have call predecessors, (2782), 1765 states have return successors, (2782), 2655 states have call predecessors, (2782), 2782 states have call successors, (2782) [2022-11-25 15:37:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19040 states to 19040 states and 23759 transitions. [2022-11-25 15:37:18,740 INFO L78 Accepts]: Start accepts. Automaton has 19040 states and 23759 transitions. Word has length 208 [2022-11-25 15:37:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:18,740 INFO L495 AbstractCegarLoop]: Abstraction has 19040 states and 23759 transitions. [2022-11-25 15:37:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.0) internal successors, (322), 23 states have internal predecessors, (322), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2022-11-25 15:37:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19040 states and 23759 transitions. [2022-11-25 15:37:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-25 15:37:18,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:18,744 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:18,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:18,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-25 15:37:18,945 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:37:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash -492781217, now seen corresponding path program 1 times [2022-11-25 15:37:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:18,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640132308] [2022-11-25 15:37:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:37:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:37:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:37:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 15:37:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:37:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:37:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:37:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:37:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-25 15:37:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-25 15:37:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-25 15:37:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:37:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-25 15:37:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-25 15:37:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-25 15:37:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-25 15:37:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 15:37:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-25 15:37:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:37:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-25 15:37:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-25 15:37:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640132308] [2022-11-25 15:37:20,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640132308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853087581] [2022-11-25 15:37:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:20,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:37:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:37:20,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:37:20,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 15:37:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:20,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 15:37:20,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 128 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 15:37:20,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-25 15:37:21,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853087581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:37:21,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:37:21,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-11-25 15:37:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021002789] [2022-11-25 15:37:21,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:21,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 15:37:21,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 15:37:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:37:21,043 INFO L87 Difference]: Start difference. First operand 19040 states and 23759 transitions. Second operand has 22 states, 22 states have (on average 11.818181818181818) internal successors, (260), 19 states have internal predecessors, (260), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2022-11-25 15:37:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:56,107 INFO L93 Difference]: Finished difference Result 61648 states and 80199 transitions. [2022-11-25 15:37:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-11-25 15:37:56,108 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.818181818181818) internal successors, (260), 19 states have internal predecessors, (260), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) Word has length 210 [2022-11-25 15:37:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:56,236 INFO L225 Difference]: With dead ends: 61648 [2022-11-25 15:37:56,236 INFO L226 Difference]: Without dead ends: 44384 [2022-11-25 15:37:56,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8981 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2055, Invalid=22751, Unknown=0, NotChecked=0, Total=24806 [2022-11-25 15:37:56,272 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 1913 mSDsluCounter, 15462 mSDsCounter, 0 mSdLazyCounter, 11719 mSolverCounterSat, 2069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 16680 SdHoareTripleChecker+Invalid, 13788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2069 IncrementalHoareTripleChecker+Valid, 11719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:56,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1921 Valid, 16680 Invalid, 13788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2069 Valid, 11719 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-25 15:37:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44384 states. [2022-11-25 15:38:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44384 to 28703. [2022-11-25 15:38:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28703 states, 21845 states have (on average 1.2644998855573357) internal successors, (27623), 22038 states have internal predecessors, (27623), 4211 states have call successors, (4211), 2646 states have call predecessors, (4211), 2646 states have return successors, (4211), 4018 states have call predecessors, (4211), 4211 states have call successors, (4211) [2022-11-25 15:38:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28703 states to 28703 states and 36045 transitions. [2022-11-25 15:38:08,916 INFO L78 Accepts]: Start accepts. Automaton has 28703 states and 36045 transitions. Word has length 210 [2022-11-25 15:38:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:08,916 INFO L495 AbstractCegarLoop]: Abstraction has 28703 states and 36045 transitions. [2022-11-25 15:38:08,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.818181818181818) internal successors, (260), 19 states have internal predecessors, (260), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2022-11-25 15:38:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28703 states and 36045 transitions. [2022-11-25 15:38:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-25 15:38:08,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:08,920 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:08,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-25 15:38:09,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c769e9ab-ceaa-45a7-a5eb-3d54f493c3e5/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-25 15:38:09,123 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:38:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash -653100734, now seen corresponding path program 1 times [2022-11-25 15:38:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:09,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827537530] [2022-11-25 15:38:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:38:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:38:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:38:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:38:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 15:38:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:38:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:38:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-25 15:38:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-25 15:38:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:38:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 15:38:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 15:38:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-25 15:38:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-25 15:38:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-25 15:38:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-25 15:38:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-25 15:38:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-25 15:38:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-25 15:38:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:38:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-25 15:38:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-25 15:38:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:09,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827537530] [2022-11-25 15:38:09,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827537530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:09,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:38:09,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:38:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065555223] [2022-11-25 15:38:09,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:09,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:38:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:38:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:38:09,543 INFO L87 Difference]: Start difference. First operand 28703 states and 36045 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21)