./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- 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-8393723 [2022-11-18 19:50:32,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:32,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:32,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:32,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:32,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:32,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:32,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:32,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:32,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:32,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:32,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:32,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:32,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:32,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:32,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:32,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:32,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:32,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:32,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:32,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:32,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:32,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:32,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:32,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:32,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:32,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:32,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:32,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:32,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:32,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:32,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:32,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:32,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:32,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:32,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:32,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:32,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:32,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:32,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:32,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:32,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:50:32,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:32,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:32,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:32,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:32,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:32,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:32,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:32,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:32,494 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:32,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:32,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:32,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:32,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:50:32,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:32,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:50:32,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:50:32,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:32,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:50:32,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:32,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:32,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:32,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:32,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:32,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:32,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:50:32,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:50:32,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:50:32,503 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:50:32,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:50:32,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:50:32,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2022-11-18 19:50:32,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:32,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:32,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:32,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:32,822 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:32,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-18 19:50:32,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/data/f0c35d473/2df12c9bdebc4e6586ee438019970078/FLAG3d0781204 [2022-11-18 19:50:33,884 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:33,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-18 19:50:33,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/data/f0c35d473/2df12c9bdebc4e6586ee438019970078/FLAG3d0781204 [2022-11-18 19:50:34,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/data/f0c35d473/2df12c9bdebc4e6586ee438019970078 [2022-11-18 19:50:34,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:34,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:34,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:34,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:34,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:34,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:34" (1/1) ... [2022-11-18 19:50:34,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f99d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:34, skipping insertion in model container [2022-11-18 19:50:34,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:34" (1/1) ... [2022-11-18 19:50:34,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:34,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:36,787 WARN L234 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_95c24cf2-0f21-4b19-97b1-11133dc6795e/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-18 19:50:36,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:37,012 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:50:37,666 WARN L234 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_95c24cf2-0f21-4b19-97b1-11133dc6795e/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2022-11-18 19:50:37,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:37,834 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:50:37,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37 WrapperNode [2022-11-18 19:50:37,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:37,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:37,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:50:37,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:50:37,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:38,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:38,470 INFO L138 Inliner]: procedures = 189, calls = 7161, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 17693 [2022-11-18 19:50:38,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:38,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:50:38,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:50:38,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:50:38,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:38,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:38,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:38,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:50:39,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:50:39,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:50:39,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:50:39,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (1/1) ... [2022-11-18 19:50:39,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:39,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:50:39,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:50:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2022-11-18 19:50:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2022-11-18 19:50:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-18 19:50:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-18 19:50:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-18 19:50:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-18 19:50:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 19:50:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 19:50:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 19:50:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-18 19:50:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-18 19:50:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2022-11-18 19:50:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2022-11-18 19:50:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-18 19:50:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-18 19:50:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 19:50:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 19:50:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-18 19:50:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-18 19:50:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:50:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-18 19:50:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-18 19:50:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-18 19:50:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-18 19:50:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-18 19:50:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-18 19:50:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 19:50:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 19:50:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-18 19:50:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-18 19:50:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-18 19:50:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-18 19:50:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:50:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 19:50:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 19:50:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-18 19:50:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-18 19:50:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 19:50:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 19:50:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-18 19:50:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-18 19:50:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-18 19:50:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-18 19:50:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-18 19:50:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-18 19:50:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-18 19:50:39,575 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-18 19:50:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 19:50:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 19:50:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-18 19:50:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-18 19:50:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-18 19:50:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-18 19:50:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 19:50:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 19:50:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-18 19:50:39,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-18 19:50:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-18 19:50:39,579 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-18 19:50:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:50:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:50:39,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:50:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-18 19:50:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-18 19:50:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-18 19:50:39,580 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-18 19:50:39,580 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-18 19:50:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-18 19:50:39,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-18 19:50:39,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-18 19:50:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:50:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-18 19:50:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-18 19:50:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-18 19:50:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-18 19:50:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-18 19:50:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-18 19:50:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-18 19:50:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-18 19:50:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-18 19:50:39,584 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-18 19:50:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:50:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:50:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-18 19:50:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-18 19:50:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-18 19:50:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-18 19:50:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-18 19:50:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-18 19:50:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-18 19:50:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-18 19:50:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 19:50:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 19:50:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-18 19:50:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-18 19:50:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-18 19:50:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-18 19:50:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:50:39,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-18 19:50:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-18 19:50:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2022-11-18 19:50:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2022-11-18 19:50:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-18 19:50:39,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-18 19:50:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 19:50:39,590 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-18 19:50:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-18 19:50:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:50:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:50:39,591 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-18 19:50:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-18 19:50:40,960 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:50:40,963 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:50:55,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:50:55,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:50:55,874 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:50:55,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:55 BoogieIcfgContainer [2022-11-18 19:50:55,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:50:55,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:50:55,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:50:55,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:50:55,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:50:34" (1/3) ... [2022-11-18 19:50:55,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a118f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:55, skipping insertion in model container [2022-11-18 19:50:55,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:37" (2/3) ... [2022-11-18 19:50:55,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a118f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:55, skipping insertion in model container [2022-11-18 19:50:55,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:55" (3/3) ... [2022-11-18 19:50:55,899 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2022-11-18 19:50:55,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:50:55,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:50:56,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:50:56,117 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;@4afca5b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:50:56,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:50:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 5660 states, 4333 states have (on average 1.5654281098546041) internal successors, (6783), 4347 states have internal predecessors, (6783), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2022-11-18 19:50:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:50:56,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:56,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:56,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -119986756, now seen corresponding path program 1 times [2022-11-18 19:50:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:56,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943319681] [2022-11-18 19:50:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:57,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943319681] [2022-11-18 19:50:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943319681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:57,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:57,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545048067] [2022-11-18 19:50:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:57,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:50:57,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:50:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:57,439 INFO L87 Difference]: Start difference. First operand has 5660 states, 4333 states have (on average 1.5654281098546041) internal successors, (6783), 4347 states have internal predecessors, (6783), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:58,322 INFO L93 Difference]: Finished difference Result 11314 states and 18732 transitions. [2022-11-18 19:50:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:50:58,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:50:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:58,414 INFO L225 Difference]: With dead ends: 11314 [2022-11-18 19:50:58,415 INFO L226 Difference]: Without dead ends: 5653 [2022-11-18 19:50:58,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:58,515 INFO L413 NwaCegarLoop]: 9266 mSDtfsCounter, 9262 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9262 SdHoareTripleChecker+Valid, 9266 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:58,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9262 Valid, 9266 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:50:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2022-11-18 19:50:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5653. [2022-11-18 19:50:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 4329 states have (on average 1.5523215523215523) internal successors, (6720), 4340 states have internal predecessors, (6720), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2022-11-18 19:50:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 9263 transitions. [2022-11-18 19:50:59,788 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 9263 transitions. Word has length 8 [2022-11-18 19:50:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:59,790 INFO L495 AbstractCegarLoop]: Abstraction has 5653 states and 9263 transitions. [2022-11-18 19:50:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 9263 transitions. [2022-11-18 19:50:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:50:59,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:59,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:59,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:50:59,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:50:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 572908111, now seen corresponding path program 1 times [2022-11-18 19:50:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:59,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134549360] [2022-11-18 19:50:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134549360] [2022-11-18 19:51:00,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134549360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:00,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271219506] [2022-11-18 19:51:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:00,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:00,734 INFO L87 Difference]: Start difference. First operand 5653 states and 9263 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:01,354 INFO L93 Difference]: Finished difference Result 11374 states and 18637 transitions. [2022-11-18 19:51:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:51:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:01,412 INFO L225 Difference]: With dead ends: 11374 [2022-11-18 19:51:01,412 INFO L226 Difference]: Without dead ends: 5724 [2022-11-18 19:51:01,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:01,473 INFO L413 NwaCegarLoop]: 9263 mSDtfsCounter, 8866 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8866 SdHoareTripleChecker+Valid, 9753 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:01,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8866 Valid, 9753 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2022-11-18 19:51:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5721. [2022-11-18 19:51:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 4389 states have (on average 1.5525176577808157) internal successors, (6814), 4398 states have internal predecessors, (6814), 1279 states have call successors, (1279), 54 states have call predecessors, (1279), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-18 19:51:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 9364 transitions. [2022-11-18 19:51:02,600 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 9364 transitions. Word has length 9 [2022-11-18 19:51:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:02,601 INFO L495 AbstractCegarLoop]: Abstraction has 5721 states and 9364 transitions. [2022-11-18 19:51:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 9364 transitions. [2022-11-18 19:51:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:51:02,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:02,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:51:02,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash 577817375, now seen corresponding path program 1 times [2022-11-18 19:51:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043883182] [2022-11-18 19:51:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:03,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043883182] [2022-11-18 19:51:03,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043883182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:03,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:03,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177252596] [2022-11-18 19:51:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:03,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:03,155 INFO L87 Difference]: Start difference. First operand 5721 states and 9364 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:03,630 INFO L93 Difference]: Finished difference Result 5723 states and 9365 transitions. [2022-11-18 19:51:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:03,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:51:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:03,679 INFO L225 Difference]: With dead ends: 5723 [2022-11-18 19:51:03,680 INFO L226 Difference]: Without dead ends: 5720 [2022-11-18 19:51:03,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:03,693 INFO L413 NwaCegarLoop]: 9256 mSDtfsCounter, 9250 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9250 SdHoareTripleChecker+Valid, 9256 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:03,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9250 Valid, 9256 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2022-11-18 19:51:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5720. [2022-11-18 19:51:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 4389 states have (on average 1.5522898154477103) internal successors, (6813), 4397 states have internal predecessors, (6813), 1278 states have call successors, (1278), 54 states have call predecessors, (1278), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-18 19:51:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9362 transitions. [2022-11-18 19:51:04,769 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9362 transitions. Word has length 10 [2022-11-18 19:51:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:04,770 INFO L495 AbstractCegarLoop]: Abstraction has 5720 states and 9362 transitions. [2022-11-18 19:51:04,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9362 transitions. [2022-11-18 19:51:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:51:04,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:04,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:04,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:51:04,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 730009426, now seen corresponding path program 1 times [2022-11-18 19:51:04,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:04,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135376019] [2022-11-18 19:51:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:05,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135376019] [2022-11-18 19:51:05,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135376019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:05,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:05,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008574646] [2022-11-18 19:51:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,403 INFO L87 Difference]: Start difference. First operand 5720 states and 9362 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:05,911 INFO L93 Difference]: Finished difference Result 5722 states and 9363 transitions. [2022-11-18 19:51:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:51:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:05,963 INFO L225 Difference]: With dead ends: 5722 [2022-11-18 19:51:05,964 INFO L226 Difference]: Without dead ends: 5719 [2022-11-18 19:51:05,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,979 INFO L413 NwaCegarLoop]: 9254 mSDtfsCounter, 9247 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9247 SdHoareTripleChecker+Valid, 9254 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:05,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9247 Valid, 9254 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2022-11-18 19:51:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5719. [2022-11-18 19:51:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5719 states, 4389 states have (on average 1.5520619731146046) internal successors, (6812), 4396 states have internal predecessors, (6812), 1277 states have call successors, (1277), 54 states have call predecessors, (1277), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-18 19:51:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5719 states to 5719 states and 9360 transitions. [2022-11-18 19:51:06,946 INFO L78 Accepts]: Start accepts. Automaton has 5719 states and 9360 transitions. Word has length 11 [2022-11-18 19:51:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:06,947 INFO L495 AbstractCegarLoop]: Abstraction has 5719 states and 9360 transitions. [2022-11-18 19:51:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5719 states and 9360 transitions. [2022-11-18 19:51:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:51:06,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:06,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:51:06,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1153000578, now seen corresponding path program 1 times [2022-11-18 19:51:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:06,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611694895] [2022-11-18 19:51:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:07,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611694895] [2022-11-18 19:51:07,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611694895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:07,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:07,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272771433] [2022-11-18 19:51:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:07,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:07,593 INFO L87 Difference]: Start difference. First operand 5719 states and 9360 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:08,002 INFO L93 Difference]: Finished difference Result 5721 states and 9361 transitions. [2022-11-18 19:51:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 19:51:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:08,067 INFO L225 Difference]: With dead ends: 5721 [2022-11-18 19:51:08,067 INFO L226 Difference]: Without dead ends: 5718 [2022-11-18 19:51:08,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:08,075 INFO L413 NwaCegarLoop]: 9252 mSDtfsCounter, 9244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9244 SdHoareTripleChecker+Valid, 9252 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:08,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9244 Valid, 9252 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2022-11-18 19:51:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5718. [2022-11-18 19:51:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 4389 states have (on average 1.5518341307814991) internal successors, (6811), 4395 states have internal predecessors, (6811), 1276 states have call successors, (1276), 54 states have call predecessors, (1276), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2022-11-18 19:51:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 9358 transitions. [2022-11-18 19:51:09,060 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 9358 transitions. Word has length 12 [2022-11-18 19:51:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:09,061 INFO L495 AbstractCegarLoop]: Abstraction has 5718 states and 9358 transitions. [2022-11-18 19:51:09,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 9358 transitions. [2022-11-18 19:51:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:51:09,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:09,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:51:09,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1380829269, now seen corresponding path program 1 times [2022-11-18 19:51:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:09,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110616878] [2022-11-18 19:51:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:09,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:09,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110616878] [2022-11-18 19:51:09,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110616878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:09,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:09,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176046365] [2022-11-18 19:51:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:09,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:09,552 INFO L87 Difference]: Start difference. First operand 5718 states and 9358 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:10,587 INFO L93 Difference]: Finished difference Result 17132 states and 28180 transitions. [2022-11-18 19:51:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:10,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:51:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:10,686 INFO L225 Difference]: With dead ends: 17132 [2022-11-18 19:51:10,686 INFO L226 Difference]: Without dead ends: 11411 [2022-11-18 19:51:10,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:10,753 INFO L413 NwaCegarLoop]: 10631 mSDtfsCounter, 9272 mSDsluCounter, 9274 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9272 SdHoareTripleChecker+Valid, 19905 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:10,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9272 Valid, 19905 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11411 states. [2022-11-18 19:51:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11411 to 11402. [2022-11-18 19:51:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11402 states, 8755 states have (on average 1.5529411764705883) internal successors, (13596), 8766 states have internal predecessors, (13596), 2544 states have call successors, (2544), 105 states have call predecessors, (2544), 102 states have return successors, (2617), 2534 states have call predecessors, (2617), 2537 states have call successors, (2617) [2022-11-18 19:51:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11402 states to 11402 states and 18757 transitions. [2022-11-18 19:51:13,119 INFO L78 Accepts]: Start accepts. Automaton has 11402 states and 18757 transitions. Word has length 13 [2022-11-18 19:51:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:13,120 INFO L495 AbstractCegarLoop]: Abstraction has 11402 states and 18757 transitions. [2022-11-18 19:51:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11402 states and 18757 transitions. [2022-11-18 19:51:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 19:51:13,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,140 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:51:13,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:51:13,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2005954428, now seen corresponding path program 1 times [2022-11-18 19:51:13,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104384942] [2022-11-18 19:51:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:51:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 19:51:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:51:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:51:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:51:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:51:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:51:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:14,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104384942] [2022-11-18 19:51:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104384942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:14,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:14,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216866491] [2022-11-18 19:51:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:14,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:14,429 INFO L87 Difference]: Start difference. First operand 11402 states and 18757 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:51:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:22,926 INFO L93 Difference]: Finished difference Result 23036 states and 37994 transitions. [2022-11-18 19:51:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:22,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2022-11-18 19:51:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:23,015 INFO L225 Difference]: With dead ends: 23036 [2022-11-18 19:51:23,015 INFO L226 Difference]: Without dead ends: 11637 [2022-11-18 19:51:23,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:51:23,132 INFO L413 NwaCegarLoop]: 9038 mSDtfsCounter, 499 mSDsluCounter, 23888 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 1323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 32926 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1323 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:23,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 32926 Invalid, 3923 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1323 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-18 19:51:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2022-11-18 19:51:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11523. [2022-11-18 19:51:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 8855 states have (on average 1.5522303783173348) internal successors, (13745), 8868 states have internal predecessors, (13745), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2022-11-18 19:51:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 18946 transitions. [2022-11-18 19:51:25,021 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 18946 transitions. Word has length 69 [2022-11-18 19:51:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:25,022 INFO L495 AbstractCegarLoop]: Abstraction has 11523 states and 18946 transitions. [2022-11-18 19:51:25,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 19:51:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 18946 transitions. [2022-11-18 19:51:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:51:25,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:25,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:51:25,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:51:25,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1636477327, now seen corresponding path program 1 times [2022-11-18 19:51:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:25,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73413195] [2022-11-18 19:51:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:25,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:51:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:51:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:51:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:51:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:51:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:51:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:51:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:51:25,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73413195] [2022-11-18 19:51:25,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73413195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:25,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:25,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314166245] [2022-11-18 19:51:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:25,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:25,919 INFO L87 Difference]: Start difference. First operand 11523 states and 18946 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:51:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:32,650 INFO L93 Difference]: Finished difference Result 23159 states and 38259 transitions. [2022-11-18 19:51:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-18 19:51:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:32,749 INFO L225 Difference]: With dead ends: 23159 [2022-11-18 19:51:32,749 INFO L226 Difference]: Without dead ends: 11639 [2022-11-18 19:51:32,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:32,913 INFO L413 NwaCegarLoop]: 9045 mSDtfsCounter, 342 mSDsluCounter, 15001 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 24046 SdHoareTripleChecker+Invalid, 3485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:32,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 24046 Invalid, 3485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1280 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 19:51:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11639 states. [2022-11-18 19:51:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11639 to 11527. [2022-11-18 19:51:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11527 states, 8859 states have (on average 1.551981036234338) internal successors, (13749), 8872 states have internal predecessors, (13749), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2022-11-18 19:51:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 18950 transitions. [2022-11-18 19:51:35,079 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 18950 transitions. Word has length 78 [2022-11-18 19:51:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:35,079 INFO L495 AbstractCegarLoop]: Abstraction has 11527 states and 18950 transitions. [2022-11-18 19:51:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:51:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 18950 transitions. [2022-11-18 19:51:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:51:35,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:35,086 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:51:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:51:35,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:35,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1964991667, now seen corresponding path program 1 times [2022-11-18 19:51:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:35,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002675232] [2022-11-18 19:51:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:51:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:51:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:51:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:51:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:51:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:51:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:51:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:51:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:35,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002675232] [2022-11-18 19:51:35,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002675232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:35,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:35,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251595817] [2022-11-18 19:51:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:35,808 INFO L87 Difference]: Start difference. First operand 11527 states and 18950 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:51:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:42,770 INFO L93 Difference]: Finished difference Result 23167 states and 38267 transitions. [2022-11-18 19:51:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2022-11-18 19:51:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:42,843 INFO L225 Difference]: With dead ends: 23167 [2022-11-18 19:51:42,843 INFO L226 Difference]: Without dead ends: 11643 [2022-11-18 19:51:42,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:42,969 INFO L413 NwaCegarLoop]: 9046 mSDtfsCounter, 342 mSDsluCounter, 15003 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 1279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 24049 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1279 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:42,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 24049 Invalid, 3484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1279 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-18 19:51:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11643 states. [2022-11-18 19:51:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11643 to 11531. [2022-11-18 19:51:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11531 states, 8863 states have (on average 1.5517319192147128) internal successors, (13753), 8876 states have internal predecessors, (13753), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2022-11-18 19:51:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 18954 transitions. [2022-11-18 19:51:44,929 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 18954 transitions. Word has length 78 [2022-11-18 19:51:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:44,929 INFO L495 AbstractCegarLoop]: Abstraction has 11531 states and 18954 transitions. [2022-11-18 19:51:44,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 19:51:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 18954 transitions. [2022-11-18 19:51:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:51:44,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:44,935 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:51:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:51:44,936 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1649917259, now seen corresponding path program 1 times [2022-11-18 19:51:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:44,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281459057] [2022-11-18 19:51:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:51:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:51:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:51:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:51:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:51:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:51:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:51:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:51:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281459057] [2022-11-18 19:51:47,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281459057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:47,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:47,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:51:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506510776] [2022-11-18 19:51:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:47,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:51:47,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:51:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:51:47,276 INFO L87 Difference]: Start difference. First operand 11531 states and 18954 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:51:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:57,407 INFO L93 Difference]: Finished difference Result 23540 states and 39696 transitions. [2022-11-18 19:51:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:57,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-18 19:51:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:57,498 INFO L225 Difference]: With dead ends: 23540 [2022-11-18 19:51:57,499 INFO L226 Difference]: Without dead ends: 12012 [2022-11-18 19:51:57,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:51:57,613 INFO L413 NwaCegarLoop]: 9257 mSDtfsCounter, 518 mSDsluCounter, 51392 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 1305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 60649 SdHoareTripleChecker+Invalid, 5277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 60649 Invalid, 5277 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1305 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-18 19:51:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12012 states. [2022-11-18 19:51:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12012 to 11613. [2022-11-18 19:51:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11613 states, 8943 states have (on average 1.5530582578553058) internal successors, (13889), 8954 states have internal predecessors, (13889), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 110 states have return successors, (3160), 2555 states have call predecessors, (3160), 2552 states have call successors, (3160) [2022-11-18 19:51:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11613 states to 11613 states and 19608 transitions. [2022-11-18 19:51:59,936 INFO L78 Accepts]: Start accepts. Automaton has 11613 states and 19608 transitions. Word has length 78 [2022-11-18 19:51:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:59,936 INFO L495 AbstractCegarLoop]: Abstraction has 11613 states and 19608 transitions. [2022-11-18 19:51:59,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:51:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 11613 states and 19608 transitions. [2022-11-18 19:51:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 19:51:59,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:59,943 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:51:59,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:51:59,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash 982189583, now seen corresponding path program 1 times [2022-11-18 19:51:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:59,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620708551] [2022-11-18 19:51:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:52:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:52:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:52:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:52:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 19:52:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:52:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:52:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:52:02,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620708551] [2022-11-18 19:52:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620708551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:02,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:02,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:52:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628436876] [2022-11-18 19:52:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:52:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:52:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:52:02,294 INFO L87 Difference]: Start difference. First operand 11613 states and 19608 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:52:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:12,644 INFO L93 Difference]: Finished difference Result 23698 states and 40482 transitions. [2022-11-18 19:52:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-11-18 19:52:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:12,703 INFO L225 Difference]: With dead ends: 23698 [2022-11-18 19:52:12,704 INFO L226 Difference]: Without dead ends: 12088 [2022-11-18 19:52:12,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:52:12,803 INFO L413 NwaCegarLoop]: 9239 mSDtfsCounter, 518 mSDsluCounter, 51338 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 1307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 60577 SdHoareTripleChecker+Invalid, 5263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1307 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:12,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 60577 Invalid, 5263 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1307 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-18 19:52:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12088 states. [2022-11-18 19:52:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12088 to 11617. [2022-11-18 19:52:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11617 states, 8947 states have (on average 1.5528109980999218) internal successors, (13893), 8954 states have internal predecessors, (13893), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 110 states have return successors, (3160), 2559 states have call predecessors, (3160), 2552 states have call successors, (3160) [2022-11-18 19:52:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11617 states to 11617 states and 19612 transitions. [2022-11-18 19:52:14,825 INFO L78 Accepts]: Start accepts. Automaton has 11617 states and 19612 transitions. Word has length 78 [2022-11-18 19:52:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:14,826 INFO L495 AbstractCegarLoop]: Abstraction has 11617 states and 19612 transitions. [2022-11-18 19:52:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:52:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 11617 states and 19612 transitions. [2022-11-18 19:52:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 19:52:14,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:14,832 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:52:14,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:52:14,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1880242844, now seen corresponding path program 1 times [2022-11-18 19:52:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:14,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140908257] [2022-11-18 19:52:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:52:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:52:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:52:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 19:52:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:52:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 19:52:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:52:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:52:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:52:16,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:16,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140908257] [2022-11-18 19:52:16,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140908257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:16,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:16,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:52:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373686135] [2022-11-18 19:52:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:52:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:52:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:52:16,546 INFO L87 Difference]: Start difference. First operand 11617 states and 19612 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:52:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:47,915 INFO L93 Difference]: Finished difference Result 29662 states and 50354 transitions. [2022-11-18 19:52:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-18 19:52:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:48,013 INFO L225 Difference]: With dead ends: 29662 [2022-11-18 19:52:48,013 INFO L226 Difference]: Without dead ends: 18048 [2022-11-18 19:52:48,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:52:48,080 INFO L413 NwaCegarLoop]: 7231 mSDtfsCounter, 6976 mSDsluCounter, 33070 mSDsCounter, 0 mSdLazyCounter, 26780 mSolverCounterSat, 3753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8362 SdHoareTripleChecker+Valid, 40301 SdHoareTripleChecker+Invalid, 30533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3753 IncrementalHoareTripleChecker+Valid, 26780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:48,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8362 Valid, 40301 Invalid, 30533 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3753 Valid, 26780 Invalid, 0 Unknown, 0 Unchecked, 29.7s Time] [2022-11-18 19:52:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18048 states. [2022-11-18 19:52:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18048 to 11643. [2022-11-18 19:52:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11643 states, 8971 states have (on average 1.5513320700033442) internal successors, (13917), 8978 states have internal predecessors, (13917), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 112 states have return successors, (3204), 2561 states have call predecessors, (3204), 2552 states have call successors, (3204) [2022-11-18 19:52:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11643 states to 11643 states and 19680 transitions. [2022-11-18 19:52:50,876 INFO L78 Accepts]: Start accepts. Automaton has 11643 states and 19680 transitions. Word has length 72 [2022-11-18 19:52:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:50,877 INFO L495 AbstractCegarLoop]: Abstraction has 11643 states and 19680 transitions. [2022-11-18 19:52:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 19:52:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11643 states and 19680 transitions. [2022-11-18 19:52:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 19:52:50,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:50,883 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:52:50,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:52:50,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash -30304307, now seen corresponding path program 1 times [2022-11-18 19:52:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:50,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84194314] [2022-11-18 19:52:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:52:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:52:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:52:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:52:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 19:52:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:52:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:52:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:52:58,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84194314] [2022-11-18 19:52:58,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84194314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:58,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:58,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:52:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021952358] [2022-11-18 19:52:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:58,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:52:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:52:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:52:58,296 INFO L87 Difference]: Start difference. First operand 11643 states and 19680 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:53:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:27,099 INFO L93 Difference]: Finished difference Result 24204 states and 40944 transitions. [2022-11-18 19:53:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:53:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 79 [2022-11-18 19:53:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:27,176 INFO L225 Difference]: With dead ends: 24204 [2022-11-18 19:53:27,176 INFO L226 Difference]: Without dead ends: 12564 [2022-11-18 19:53:27,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:53:27,253 INFO L413 NwaCegarLoop]: 8957 mSDtfsCounter, 1595 mSDsluCounter, 47958 mSDsCounter, 0 mSdLazyCounter, 15367 mSolverCounterSat, 1638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 56915 SdHoareTripleChecker+Invalid, 17005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1638 IncrementalHoareTripleChecker+Valid, 15367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 56915 Invalid, 17005 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1638 Valid, 15367 Invalid, 0 Unknown, 0 Unchecked, 27.0s Time] [2022-11-18 19:53:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12564 states. [2022-11-18 19:53:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12564 to 12114. [2022-11-18 19:53:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12114 states, 9313 states have (on average 1.5481584881348653) internal successors, (14418), 9352 states have internal predecessors, (14418), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 150 states have return successors, (3346), 2618 states have call predecessors, (3346), 2643 states have call successors, (3346) [2022-11-18 19:53:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12114 states to 12114 states and 20414 transitions. [2022-11-18 19:53:29,232 INFO L78 Accepts]: Start accepts. Automaton has 12114 states and 20414 transitions. Word has length 79 [2022-11-18 19:53:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:29,232 INFO L495 AbstractCegarLoop]: Abstraction has 12114 states and 20414 transitions. [2022-11-18 19:53:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:53:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12114 states and 20414 transitions. [2022-11-18 19:53:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:53:29,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:29,242 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, 1] [2022-11-18 19:53:29,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:53:29,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1463798807, now seen corresponding path program 1 times [2022-11-18 19:53:29,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:29,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755336762] [2022-11-18 19:53:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:53:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:53:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:53:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:53:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:53:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:53:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:53:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:53:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:53:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:53:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:53:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:30,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755336762] [2022-11-18 19:53:30,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755336762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:30,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:30,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:53:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628231276] [2022-11-18 19:53:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:53:30,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:53:30,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:53:30,901 INFO L87 Difference]: Start difference. First operand 12114 states and 20414 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:54:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:07,239 INFO L93 Difference]: Finished difference Result 30270 states and 51371 transitions. [2022-11-18 19:54:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:54:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-18 19:54:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:07,333 INFO L225 Difference]: With dead ends: 30270 [2022-11-18 19:54:07,333 INFO L226 Difference]: Without dead ends: 18604 [2022-11-18 19:54:07,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:54:07,395 INFO L413 NwaCegarLoop]: 7287 mSDtfsCounter, 7114 mSDsluCounter, 38456 mSDsCounter, 0 mSdLazyCounter, 30829 mSolverCounterSat, 3811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8488 SdHoareTripleChecker+Valid, 45743 SdHoareTripleChecker+Invalid, 34640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3811 IncrementalHoareTripleChecker+Valid, 30829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:07,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8488 Valid, 45743 Invalid, 34640 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3811 Valid, 30829 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2022-11-18 19:54:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18604 states. [2022-11-18 19:54:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18604 to 12114. [2022-11-18 19:54:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12114 states, 9313 states have (on average 1.5479437345645872) internal successors, (14416), 9352 states have internal predecessors, (14416), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 150 states have return successors, (3346), 2618 states have call predecessors, (3346), 2643 states have call successors, (3346) [2022-11-18 19:54:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12114 states to 12114 states and 20412 transitions. [2022-11-18 19:54:10,420 INFO L78 Accepts]: Start accepts. Automaton has 12114 states and 20412 transitions. Word has length 88 [2022-11-18 19:54:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:10,420 INFO L495 AbstractCegarLoop]: Abstraction has 12114 states and 20412 transitions. [2022-11-18 19:54:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:54:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12114 states and 20412 transitions. [2022-11-18 19:54:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 19:54:10,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:10,428 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, 1] [2022-11-18 19:54:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:54:10,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1441166553, now seen corresponding path program 1 times [2022-11-18 19:54:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:10,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427723917] [2022-11-18 19:54:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:54:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:54:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 19:54:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:54:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:54:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:54:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:54:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:54:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:54:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:54:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:54:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427723917] [2022-11-18 19:54:12,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427723917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:12,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:12,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:54:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390544675] [2022-11-18 19:54:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:54:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:54:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:54:12,280 INFO L87 Difference]: Start difference. First operand 12114 states and 20412 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:54:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:39,826 INFO L93 Difference]: Finished difference Result 28756 states and 51466 transitions. [2022-11-18 19:54:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:54:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-18 19:54:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:39,905 INFO L225 Difference]: With dead ends: 28756 [2022-11-18 19:54:39,905 INFO L226 Difference]: Without dead ends: 17090 [2022-11-18 19:54:40,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:54:40,023 INFO L413 NwaCegarLoop]: 6538 mSDtfsCounter, 6533 mSDsluCounter, 25919 mSDsCounter, 0 mSdLazyCounter, 20478 mSolverCounterSat, 5461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7513 SdHoareTripleChecker+Valid, 32457 SdHoareTripleChecker+Invalid, 25939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5461 IncrementalHoareTripleChecker+Valid, 20478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7513 Valid, 32457 Invalid, 25939 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5461 Valid, 20478 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2022-11-18 19:54:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17090 states. [2022-11-18 19:54:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17090 to 12118. [2022-11-18 19:54:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 9317 states have (on average 1.5477084898572502) internal successors, (14420), 9356 states have internal predecessors, (14420), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 150 states have return successors, (3346), 2618 states have call predecessors, (3346), 2643 states have call successors, (3346) [2022-11-18 19:54:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20416 transitions. [2022-11-18 19:54:42,570 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20416 transitions. Word has length 88 [2022-11-18 19:54:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:42,571 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20416 transitions. [2022-11-18 19:54:42,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 19:54:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20416 transitions. [2022-11-18 19:54:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:54:42,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:42,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:54:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:54:42,579 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1588934008, now seen corresponding path program 1 times [2022-11-18 19:54:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:42,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845286838] [2022-11-18 19:54:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:54:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:54:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:54:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 19:54:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:54:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 19:54:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:54:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:54:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:54:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845286838] [2022-11-18 19:54:44,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845286838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:44,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:44,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:54:44,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547387659] [2022-11-18 19:54:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:44,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:54:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:54:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:54:44,075 INFO L87 Difference]: Start difference. First operand 12118 states and 20416 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 19:55:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:16,522 INFO L93 Difference]: Finished difference Result 30310 states and 54001 transitions. [2022-11-18 19:55:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-11-18 19:55:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:16,649 INFO L225 Difference]: With dead ends: 30310 [2022-11-18 19:55:16,649 INFO L226 Difference]: Without dead ends: 18640 [2022-11-18 19:55:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:55:16,712 INFO L413 NwaCegarLoop]: 7753 mSDtfsCounter, 7041 mSDsluCounter, 35616 mSDsCounter, 0 mSdLazyCounter, 26622 mSolverCounterSat, 3599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8931 SdHoareTripleChecker+Valid, 43369 SdHoareTripleChecker+Invalid, 30221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3599 IncrementalHoareTripleChecker+Valid, 26622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:16,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8931 Valid, 43369 Invalid, 30221 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3599 Valid, 26622 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2022-11-18 19:55:16,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18640 states. [2022-11-18 19:55:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18640 to 12128. [2022-11-18 19:55:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12128 states, 9325 states have (on average 1.5472386058981233) internal successors, (14428), 9364 states have internal predecessors, (14428), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 152 states have return successors, (3386), 2620 states have call predecessors, (3386), 2643 states have call successors, (3386) [2022-11-18 19:55:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12128 states to 12128 states and 20464 transitions. [2022-11-18 19:55:21,201 INFO L78 Accepts]: Start accepts. Automaton has 12128 states and 20464 transitions. Word has length 74 [2022-11-18 19:55:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:21,202 INFO L495 AbstractCegarLoop]: Abstraction has 12128 states and 20464 transitions. [2022-11-18 19:55:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 19:55:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12128 states and 20464 transitions. [2022-11-18 19:55:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:55:21,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:21,207 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:21,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:55:21,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:21,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2001839630, now seen corresponding path program 1 times [2022-11-18 19:55:21,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:21,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331172629] [2022-11-18 19:55:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:21,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:55:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:55:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:55:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:55:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:55:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:55:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:55:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:55:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331172629] [2022-11-18 19:55:23,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331172629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083826520] [2022-11-18 19:55:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:23,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:55:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 8584 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:55:26,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:55:26,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:55:26,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083826520] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:26,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:26,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2022-11-18 19:55:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090116251] [2022-11-18 19:55:26,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:26,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:26,899 INFO L87 Difference]: Start difference. First operand 12128 states and 20464 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:55:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:28,004 INFO L93 Difference]: Finished difference Result 23812 states and 42108 transitions. [2022-11-18 19:55:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2022-11-18 19:55:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:28,090 INFO L225 Difference]: With dead ends: 23812 [2022-11-18 19:55:28,090 INFO L226 Difference]: Without dead ends: 12132 [2022-11-18 19:55:28,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:28,391 INFO L413 NwaCegarLoop]: 9248 mSDtfsCounter, 38 mSDsluCounter, 18456 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 27704 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:28,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 27704 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12132 states. [2022-11-18 19:55:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12132 to 12132. [2022-11-18 19:55:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12132 states, 9329 states have (on average 1.5470039661271304) internal successors, (14432), 9368 states have internal predecessors, (14432), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 152 states have return successors, (3386), 2620 states have call predecessors, (3386), 2643 states have call successors, (3386) [2022-11-18 19:55:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12132 states to 12132 states and 20468 transitions. [2022-11-18 19:55:30,273 INFO L78 Accepts]: Start accepts. Automaton has 12132 states and 20468 transitions. Word has length 95 [2022-11-18 19:55:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:30,274 INFO L495 AbstractCegarLoop]: Abstraction has 12132 states and 20468 transitions. [2022-11-18 19:55:30,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 19:55:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12132 states and 20468 transitions. [2022-11-18 19:55:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 19:55:30,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:30,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:30,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:55:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c24cf2-0f21-4b19-97b1-11133dc6795e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:55:30,481 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash -720409584, now seen corresponding path program 1 times [2022-11-18 19:55:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:30,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169480820] [2022-11-18 19:55:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 19:55:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:55:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:55:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 19:55:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:55:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:55:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:55:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:55:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:55:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:55:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:34,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169480820] [2022-11-18 19:55:34,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169480820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:34,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:34,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902529488] [2022-11-18 19:55:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:34,620 INFO L87 Difference]: Start difference. First operand 12132 states and 20468 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 19:55:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:43,773 INFO L93 Difference]: Finished difference Result 23977 states and 42360 transitions. [2022-11-18 19:55:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:55:43,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 96 [2022-11-18 19:55:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:43,852 INFO L225 Difference]: With dead ends: 23977 [2022-11-18 19:55:43,852 INFO L226 Difference]: Without dead ends: 12293 [2022-11-18 19:55:43,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:43,923 INFO L413 NwaCegarLoop]: 9068 mSDtfsCounter, 805 mSDsluCounter, 42552 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 51620 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 51620 Invalid, 5209 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2580 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-18 19:55:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12293 states. [2022-11-18 19:55:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12293 to 12148. [2022-11-18 19:55:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12148 states, 9342 states have (on average 1.546242774566474) internal successors, (14445), 9380 states have internal predecessors, (14445), 2650 states have call successors, (2650), 147 states have call predecessors, (2650), 155 states have return successors, (4940), 2624 states have call predecessors, (4940), 2643 states have call successors, (4940) [2022-11-18 19:55:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12148 states to 12148 states and 22035 transitions. [2022-11-18 19:55:47,327 INFO L78 Accepts]: Start accepts. Automaton has 12148 states and 22035 transitions. Word has length 96 [2022-11-18 19:55:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:47,327 INFO L495 AbstractCegarLoop]: Abstraction has 12148 states and 22035 transitions. [2022-11-18 19:55:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 19:55:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12148 states and 22035 transitions. [2022-11-18 19:55:47,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 19:55:47,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:47,332 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 19:55:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:55:47,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash 870010925, now seen corresponding path program 1 times [2022-11-18 19:55:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:47,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245890574] [2022-11-18 19:55:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:47,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 19:56:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:56:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:56:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:56:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:56:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:56:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 19:56:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:56:21,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245890574] [2022-11-18 19:56:21,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245890574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:21,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:21,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:56:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968527026] [2022-11-18 19:56:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:21,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:56:21,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:56:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:56:21,387 INFO L87 Difference]: Start difference. First operand 12148 states and 22035 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:00:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:09,306 INFO L93 Difference]: Finished difference Result 25789 states and 46789 transitions. [2022-11-18 20:00:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:00:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 83 [2022-11-18 20:00:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:09,393 INFO L225 Difference]: With dead ends: 25789 [2022-11-18 20:00:09,393 INFO L226 Difference]: Without dead ends: 14089 [2022-11-18 20:00:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:00:09,455 INFO L413 NwaCegarLoop]: 8694 mSDtfsCounter, 3263 mSDsluCounter, 57783 mSDsCounter, 0 mSdLazyCounter, 34255 mSolverCounterSat, 1967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 66477 SdHoareTripleChecker+Invalid, 36222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1967 IncrementalHoareTripleChecker+Valid, 34255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:09,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 66477 Invalid, 36222 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1967 Valid, 34255 Invalid, 0 Unknown, 0 Unchecked, 225.0s Time] [2022-11-18 20:00:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14089 states. [2022-11-18 20:00:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14089 to 13119. [2022-11-18 20:00:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13119 states, 10095 states have (on average 1.545418524021793) internal successors, (15601), 10167 states have internal predecessors, (15601), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 202 states have return successors, (5235), 2762 states have call predecessors, (5235), 2814 states have call successors, (5235) [2022-11-18 20:00:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13119 states to 13119 states and 23657 transitions. [2022-11-18 20:00:12,857 INFO L78 Accepts]: Start accepts. Automaton has 13119 states and 23657 transitions. Word has length 83 [2022-11-18 20:00:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:12,857 INFO L495 AbstractCegarLoop]: Abstraction has 13119 states and 23657 transitions. [2022-11-18 20:00:12,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:00:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13119 states and 23657 transitions. [2022-11-18 20:00:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:00:12,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:12,864 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:00:12,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:00:12,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:12,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1697531745, now seen corresponding path program 1 times [2022-11-18 20:00:12,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:12,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397971433] [2022-11-18 20:00:12,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:12,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:00:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:00:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:00:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:00:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:00:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:00:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:00:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:00:13,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:13,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397971433] [2022-11-18 20:00:13,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397971433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:13,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:13,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:00:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318093768] [2022-11-18 20:00:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:00:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:13,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:00:13,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:00:13,668 INFO L87 Difference]: Start difference. First operand 13119 states and 23657 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:00:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:36,898 INFO L93 Difference]: Finished difference Result 18073 states and 33017 transitions. [2022-11-18 20:00:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:00:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-18 20:00:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:36,996 INFO L225 Difference]: With dead ends: 18073 [2022-11-18 20:00:36,996 INFO L226 Difference]: Without dead ends: 18070 [2022-11-18 20:00:37,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:00:37,011 INFO L413 NwaCegarLoop]: 6508 mSDtfsCounter, 6529 mSDsluCounter, 12501 mSDsCounter, 0 mSdLazyCounter, 13886 mSolverCounterSat, 3580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7546 SdHoareTripleChecker+Valid, 19009 SdHoareTripleChecker+Invalid, 17466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3580 IncrementalHoareTripleChecker+Valid, 13886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:37,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7546 Valid, 19009 Invalid, 17466 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3580 Valid, 13886 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-11-18 20:00:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18070 states. [2022-11-18 20:00:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18070 to 13119. [2022-11-18 20:00:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13119 states, 10095 states have (on average 1.545121347201585) internal successors, (15598), 10167 states have internal predecessors, (15598), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 202 states have return successors, (5235), 2762 states have call predecessors, (5235), 2814 states have call successors, (5235) [2022-11-18 20:00:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13119 states to 13119 states and 23654 transitions. [2022-11-18 20:00:42,771 INFO L78 Accepts]: Start accepts. Automaton has 13119 states and 23654 transitions. Word has length 77 [2022-11-18 20:00:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:42,772 INFO L495 AbstractCegarLoop]: Abstraction has 13119 states and 23654 transitions. [2022-11-18 20:00:42,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:00:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13119 states and 23654 transitions. [2022-11-18 20:00:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:00:42,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:42,779 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:00:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:00:42,779 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1332288048, now seen corresponding path program 1 times [2022-11-18 20:00:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:42,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748157469] [2022-11-18 20:00:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:00:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:00:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:00:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:00:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:00:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:00:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:00:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:00:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:00:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748157469] [2022-11-18 20:00:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748157469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:43,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:43,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:00:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614616245] [2022-11-18 20:00:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:00:43,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:00:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:00:43,916 INFO L87 Difference]: Start difference. First operand 13119 states and 23654 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 20:00:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:52,718 INFO L93 Difference]: Finished difference Result 13546 states and 24601 transitions. [2022-11-18 20:00:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:00:52,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2022-11-18 20:00:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:52,792 INFO L225 Difference]: With dead ends: 13546 [2022-11-18 20:00:52,792 INFO L226 Difference]: Without dead ends: 13539 [2022-11-18 20:00:52,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:00:52,806 INFO L413 NwaCegarLoop]: 8900 mSDtfsCounter, 865 mSDsluCounter, 32195 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 2631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 41095 SdHoareTripleChecker+Invalid, 6463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2631 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:52,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 41095 Invalid, 6463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2631 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-18 20:00:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13539 states. [2022-11-18 20:00:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13539 to 13133. [2022-11-18 20:00:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13133 states, 10106 states have (on average 1.5445280031664357) internal successors, (15609), 10177 states have internal predecessors, (15609), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 205 states have return successors, (5271), 2766 states have call predecessors, (5271), 2814 states have call successors, (5271) [2022-11-18 20:00:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13133 states to 13133 states and 23701 transitions. [2022-11-18 20:00:56,378 INFO L78 Accepts]: Start accepts. Automaton has 13133 states and 23701 transitions. Word has length 85 [2022-11-18 20:00:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:56,379 INFO L495 AbstractCegarLoop]: Abstraction has 13133 states and 23701 transitions. [2022-11-18 20:00:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-18 20:00:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13133 states and 23701 transitions. [2022-11-18 20:00:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:00:56,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:56,388 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:00:56,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:00:56,388 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:00:56,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1123691630, now seen corresponding path program 1 times [2022-11-18 20:00:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:56,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019664779] [2022-11-18 20:00:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:56,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:01:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:01:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:01:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:01:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:01:02,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019664779] [2022-11-18 20:01:02,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019664779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:02,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:02,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:01:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289774823] [2022-11-18 20:01:02,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:01:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:01:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:01:02,415 INFO L87 Difference]: Start difference. First operand 13133 states and 23701 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:01:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:33,497 INFO L93 Difference]: Finished difference Result 25837 states and 47126 transitions. [2022-11-18 20:01:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:01:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 85 [2022-11-18 20:01:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:33,586 INFO L225 Difference]: With dead ends: 25837 [2022-11-18 20:01:33,586 INFO L226 Difference]: Without dead ends: 13705 [2022-11-18 20:01:33,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:01:33,691 INFO L413 NwaCegarLoop]: 8957 mSDtfsCounter, 1584 mSDsluCounter, 54922 mSDsCounter, 0 mSdLazyCounter, 17595 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 63879 SdHoareTripleChecker+Invalid, 19234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 17595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:33,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 63879 Invalid, 19234 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1639 Valid, 17595 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time] [2022-11-18 20:01:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13705 states. [2022-11-18 20:01:37,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13705 to 13153. [2022-11-18 20:01:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13153 states, 10126 states have (on average 1.5434524985186648) internal successors, (15629), 10197 states have internal predecessors, (15629), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 205 states have return successors, (5271), 2766 states have call predecessors, (5271), 2814 states have call successors, (5271) [2022-11-18 20:01:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 23721 transitions. [2022-11-18 20:01:37,206 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 23721 transitions. Word has length 85 [2022-11-18 20:01:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:37,209 INFO L495 AbstractCegarLoop]: Abstraction has 13153 states and 23721 transitions. [2022-11-18 20:01:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:01:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 23721 transitions. [2022-11-18 20:01:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:01:37,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:37,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:01:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:01:37,218 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -292437919, now seen corresponding path program 1 times [2022-11-18 20:01:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324496491] [2022-11-18 20:01:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:01:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:01:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:01:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:01:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:01:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:01:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:01:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:01:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324496491] [2022-11-18 20:01:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324496491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:01:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:01:43,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:01:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528230333] [2022-11-18 20:01:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:01:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:01:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:01:43,129 INFO L87 Difference]: Start difference. First operand 13153 states and 23721 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:02:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:11,555 INFO L93 Difference]: Finished difference Result 25849 states and 47122 transitions. [2022-11-18 20:02:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:02:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 87 [2022-11-18 20:02:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:11,688 INFO L225 Difference]: With dead ends: 25849 [2022-11-18 20:02:11,688 INFO L226 Difference]: Without dead ends: 13717 [2022-11-18 20:02:11,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:02:11,799 INFO L413 NwaCegarLoop]: 8954 mSDtfsCounter, 2263 mSDsluCounter, 29866 mSDsCounter, 0 mSdLazyCounter, 9577 mSolverCounterSat, 3110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 38820 SdHoareTripleChecker+Invalid, 12687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3110 IncrementalHoareTripleChecker+Valid, 9577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:11,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 38820 Invalid, 12687 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3110 Valid, 9577 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2022-11-18 20:02:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2022-11-18 20:02:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 13173. [2022-11-18 20:02:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13173 states, 10146 states have (on average 1.542381233983836) internal successors, (15649), 10217 states have internal predecessors, (15649), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 205 states have return successors, (5271), 2766 states have call predecessors, (5271), 2814 states have call successors, (5271) [2022-11-18 20:02:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13173 states to 13173 states and 23741 transitions. [2022-11-18 20:02:15,759 INFO L78 Accepts]: Start accepts. Automaton has 13173 states and 23741 transitions. Word has length 87 [2022-11-18 20:02:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:15,759 INFO L495 AbstractCegarLoop]: Abstraction has 13173 states and 23741 transitions. [2022-11-18 20:02:15,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:02:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 13173 states and 23741 transitions. [2022-11-18 20:02:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:02:15,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:15,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:02:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:02:15,765 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1928243112, now seen corresponding path program 1 times [2022-11-18 20:02:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:15,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545837716] [2022-11-18 20:02:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:02:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:02:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:02:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:02:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:02:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:02:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:02:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:02:16,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:16,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545837716] [2022-11-18 20:02:16,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545837716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:16,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:16,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:02:16,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926892003] [2022-11-18 20:02:16,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:16,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:02:16,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:02:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:16,186 INFO L87 Difference]: Start difference. First operand 13173 states and 23741 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:02:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:23,846 INFO L93 Difference]: Finished difference Result 25400 states and 46262 transitions. [2022-11-18 20:02:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:02:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2022-11-18 20:02:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:23,942 INFO L225 Difference]: With dead ends: 25400 [2022-11-18 20:02:23,943 INFO L226 Difference]: Without dead ends: 13276 [2022-11-18 20:02:24,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:02:24,059 INFO L413 NwaCegarLoop]: 9043 mSDtfsCounter, 342 mSDsluCounter, 14997 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 24040 SdHoareTripleChecker+Invalid, 3485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:24,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 24040 Invalid, 3485 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1280 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 20:02:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13276 states. [2022-11-18 20:02:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13276 to 13185. [2022-11-18 20:02:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13185 states, 10158 states have (on average 1.5417405000984445) internal successors, (15661), 10229 states have internal predecessors, (15661), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 205 states have return successors, (5271), 2766 states have call predecessors, (5271), 2814 states have call successors, (5271) [2022-11-18 20:02:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13185 states to 13185 states and 23753 transitions. [2022-11-18 20:02:27,340 INFO L78 Accepts]: Start accepts. Automaton has 13185 states and 23753 transitions. Word has length 89 [2022-11-18 20:02:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:27,340 INFO L495 AbstractCegarLoop]: Abstraction has 13185 states and 23753 transitions. [2022-11-18 20:02:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:02:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 13185 states and 23753 transitions. [2022-11-18 20:02:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:02:27,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:27,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:02:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:02:27,347 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:02:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1469330906, now seen corresponding path program 1 times [2022-11-18 20:02:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:27,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109201244] [2022-11-18 20:02:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:02:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:02:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:02:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:02:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:02:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:02:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:02:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:02:32,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:32,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109201244] [2022-11-18 20:02:32,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109201244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:32,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:32,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:02:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303640203] [2022-11-18 20:02:32,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:02:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:32,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:02:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:02:32,940 INFO L87 Difference]: Start difference. First operand 13185 states and 23753 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:03:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:02,958 INFO L93 Difference]: Finished difference Result 25869 states and 46818 transitions. [2022-11-18 20:03:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:03:02,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 89 [2022-11-18 20:03:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:03,057 INFO L225 Difference]: With dead ends: 25869 [2022-11-18 20:03:03,057 INFO L226 Difference]: Without dead ends: 13729 [2022-11-18 20:03:03,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:03:03,145 INFO L413 NwaCegarLoop]: 8955 mSDtfsCounter, 2087 mSDsluCounter, 36730 mSDsCounter, 0 mSdLazyCounter, 11695 mSolverCounterSat, 3030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 45685 SdHoareTripleChecker+Invalid, 14725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3030 IncrementalHoareTripleChecker+Valid, 11695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:03,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 45685 Invalid, 14725 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3030 Valid, 11695 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2022-11-18 20:03:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2022-11-18 20:03:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 13193. [2022-11-18 20:03:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13193 states, 10166 states have (on average 1.541314184536691) internal successors, (15669), 10237 states have internal predecessors, (15669), 2821 states have call successors, (2821), 193 states have call predecessors, (2821), 205 states have return successors, (5271), 2766 states have call predecessors, (5271), 2814 states have call successors, (5271) [2022-11-18 20:03:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13193 states to 13193 states and 23761 transitions. [2022-11-18 20:03:06,954 INFO L78 Accepts]: Start accepts. Automaton has 13193 states and 23761 transitions. Word has length 89 [2022-11-18 20:03:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:06,955 INFO L495 AbstractCegarLoop]: Abstraction has 13193 states and 23761 transitions. [2022-11-18 20:03:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:03:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13193 states and 23761 transitions. [2022-11-18 20:03:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 20:03:06,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:06,961 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:03:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:03:06,961 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1911509762, now seen corresponding path program 1 times [2022-11-18 20:03:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:06,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502490770] [2022-11-18 20:03:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:03:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 20:03:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:03:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:03:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:03:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:03:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:03:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502490770] [2022-11-18 20:03:12,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502490770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:12,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:12,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:03:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395875018] [2022-11-18 20:03:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:03:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:03:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:03:12,800 INFO L87 Difference]: Start difference. First operand 13193 states and 23761 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 9 states have internal predecessors, (70), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 20:03:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:41,981 INFO L93 Difference]: Finished difference Result 25861 states and 46798 transitions. [2022-11-18 20:03:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:03:41,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 9 states have internal predecessors, (70), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 90 [2022-11-18 20:03:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:42,071 INFO L225 Difference]: With dead ends: 25861 [2022-11-18 20:03:42,071 INFO L226 Difference]: Without dead ends: 13729 [2022-11-18 20:03:42,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:03:42,141 INFO L413 NwaCegarLoop]: 8954 mSDtfsCounter, 2271 mSDsluCounter, 29859 mSDsCounter, 0 mSdLazyCounter, 9578 mSolverCounterSat, 3112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 38813 SdHoareTripleChecker+Invalid, 12690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3112 IncrementalHoareTripleChecker+Valid, 9578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:42,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 38813 Invalid, 12690 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3112 Valid, 9578 Invalid, 0 Unknown, 0 Unchecked, 27.3s Time] [2022-11-18 20:03:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states.