./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 --- 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-5e519f3 [2022-11-02 20:43:49,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:49,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:49,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:49,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:49,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:49,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:49,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:49,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:49,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:49,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:49,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:49,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:49,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:49,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:49,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:49,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:49,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:49,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:49,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:49,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:49,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:49,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:49,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:49,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:49,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:49,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:49,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:49,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:49,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:49,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:49,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:49,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:49,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:49,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:49,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:49,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:49,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:49,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:49,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:49,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:49,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:43:49,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:49,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:49,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:49,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:49,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:49,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:49,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:49,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:49,572 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:49,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:49,573 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:43:49,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:49,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:43:49,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:49,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:49,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:49,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:49,575 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:43:49,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:49,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:49,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:49,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:49,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:49,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:49,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:49,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:49,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:49,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:49,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:49,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:49,579 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:49,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:49,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:49,580 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_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 [2022-11-02 20:43:49,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:49,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:49,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:49,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:49,905 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:49,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2022-11-02 20:43:49,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/data/75e18d449/902ae09c9f234dd885855d755d629213/FLAG695860808 [2022-11-02 20:43:51,105 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:51,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2022-11-02 20:43:51,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/data/75e18d449/902ae09c9f234dd885855d755d629213/FLAG695860808 [2022-11-02 20:43:51,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/data/75e18d449/902ae09c9f234dd885855d755d629213 [2022-11-02 20:43:51,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:51,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:51,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:51,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:51,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:51,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:51" (1/1) ... [2022-11-02 20:43:51,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6853cf45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:51, skipping insertion in model container [2022-11-02 20:43:51,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:51" (1/1) ... [2022-11-02 20:43:51,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:51,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:54,244 WARN L230 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_6295c048-772a-47b2-84c2-6f9983714638/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[380593,380606] [2022-11-02 20:43:54,272 WARN L230 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_6295c048-772a-47b2-84c2-6f9983714638/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[383339,383352] [2022-11-02 20:43:54,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:54,490 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:55,741 WARN L230 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_6295c048-772a-47b2-84c2-6f9983714638/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[380593,380606] [2022-11-02 20:43:55,748 WARN L230 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_6295c048-772a-47b2-84c2-6f9983714638/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c[383339,383352] [2022-11-02 20:43:55,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:55,844 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:55,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55 WrapperNode [2022-11-02 20:43:55,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:55,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:55,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:55,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:55,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:55,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,388 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12740 [2022-11-02 20:43:56,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:56,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:56,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:56,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:56,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:56,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:56,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:56,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:56,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (1/1) ... [2022-11-02 20:43:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:56,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:56,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:43:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 20:43:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 20:43:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:43:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:43:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 20:43:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 20:43:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-02 20:43:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-02 20:43:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 20:43:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 20:43:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 20:43:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 20:43:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 20:43:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 20:43:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:43:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:57,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:57,250 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:57,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:06,137 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:06,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:06,168 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-02 20:44:06,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:06 BoogieIcfgContainer [2022-11-02 20:44:06,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:06,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:06,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:06,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:06,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:51" (1/3) ... [2022-11-02 20:44:06,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47640636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:06, skipping insertion in model container [2022-11-02 20:44:06,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:55" (2/3) ... [2022-11-02 20:44:06,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47640636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:06, skipping insertion in model container [2022-11-02 20:44:06,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:06" (3/3) ... [2022-11-02 20:44:06,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.04.cil-2.c [2022-11-02 20:44:06,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:06,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:44:06,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:06,327 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;@79d25b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:06,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:44:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:44:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:06,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:06,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:06,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1085362317, now seen corresponding path program 1 times [2022-11-02 20:44:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:06,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043358420] [2022-11-02 20:44:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:06,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:06,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043358420] [2022-11-02 20:44:06,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043358420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:06,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:06,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:06,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296518952] [2022-11-02 20:44:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:06,870 INFO L87 Difference]: Start difference. First operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:07,870 INFO L93 Difference]: Finished difference Result 4793 states and 8852 transitions. [2022-11-02 20:44:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:07,902 INFO L225 Difference]: With dead ends: 4793 [2022-11-02 20:44:07,902 INFO L226 Difference]: Without dead ends: 2359 [2022-11-02 20:44:07,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:07,916 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 448 mSDsluCounter, 12275 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 16602 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:07,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 16602 Invalid, 347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:44:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-11-02 20:44:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2305. [2022-11-02 20:44:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2277 states have (on average 1.8436539306104522) internal successors, (4198), 2280 states have internal predecessors, (4198), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:44:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4236 transitions. [2022-11-02 20:44:08,046 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4236 transitions. Word has length 91 [2022-11-02 20:44:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:08,046 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 4236 transitions. [2022-11-02 20:44:08,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4236 transitions. [2022-11-02 20:44:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:08,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:08,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:08,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:08,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1642847029, now seen corresponding path program 1 times [2022-11-02 20:44:08,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973403722] [2022-11-02 20:44:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:08,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973403722] [2022-11-02 20:44:08,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973403722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:08,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:08,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:44:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634920118] [2022-11-02 20:44:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:08,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:08,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:08,346 INFO L87 Difference]: Start difference. First operand 2305 states and 4236 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:09,928 INFO L93 Difference]: Finished difference Result 2759 states and 4947 transitions. [2022-11-02 20:44:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:44:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:09,940 INFO L225 Difference]: With dead ends: 2759 [2022-11-02 20:44:09,940 INFO L226 Difference]: Without dead ends: 2587 [2022-11-02 20:44:09,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:44:09,943 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4606 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:09,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 16630 Invalid, 943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:44:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2022-11-02 20:44:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2478. [2022-11-02 20:44:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2430 states have (on average 1.825514403292181) internal successors, (4436), 2434 states have internal predecessors, (4436), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-11-02 20:44:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 4503 transitions. [2022-11-02 20:44:10,025 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 4503 transitions. Word has length 91 [2022-11-02 20:44:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:10,026 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 4503 transitions. [2022-11-02 20:44:10,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 4503 transitions. [2022-11-02 20:44:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:10,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:10,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:44:10,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:10,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash -411857615, now seen corresponding path program 1 times [2022-11-02 20:44:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:10,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068180456] [2022-11-02 20:44:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:10,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068180456] [2022-11-02 20:44:10,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068180456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:10,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:10,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:10,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206187322] [2022-11-02 20:44:10,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:10,327 INFO L87 Difference]: Start difference. First operand 2478 states and 4503 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:11,994 INFO L93 Difference]: Finished difference Result 3162 states and 5569 transitions. [2022-11-02 20:44:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:44:11,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:12,007 INFO L225 Difference]: With dead ends: 3162 [2022-11-02 20:44:12,007 INFO L226 Difference]: Without dead ends: 2817 [2022-11-02 20:44:12,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:12,011 INFO L413 NwaCegarLoop]: 4413 mSDtfsCounter, 4602 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 21176 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 21176 Invalid, 1388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:44:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-11-02 20:44:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2640. [2022-11-02 20:44:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2572 states have (on average 1.8087091757387248) internal successors, (4652), 2577 states have internal predecessors, (4652), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-02 20:44:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4747 transitions. [2022-11-02 20:44:12,104 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4747 transitions. Word has length 91 [2022-11-02 20:44:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:12,105 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 4747 transitions. [2022-11-02 20:44:12,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4747 transitions. [2022-11-02 20:44:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:12,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:12,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:12,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:44:12,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1322246835, now seen corresponding path program 1 times [2022-11-02 20:44:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332060819] [2022-11-02 20:44:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:12,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332060819] [2022-11-02 20:44:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332060819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:12,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:12,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440837416] [2022-11-02 20:44:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:12,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:12,370 INFO L87 Difference]: Start difference. First operand 2640 states and 4747 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:13,976 INFO L93 Difference]: Finished difference Result 3755 states and 6481 transitions. [2022-11-02 20:44:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:44:13,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:13,992 INFO L225 Difference]: With dead ends: 3755 [2022-11-02 20:44:13,992 INFO L226 Difference]: Without dead ends: 3248 [2022-11-02 20:44:13,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:13,996 INFO L413 NwaCegarLoop]: 4290 mSDtfsCounter, 4649 mSDsluCounter, 16457 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20747 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:13,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20747 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:44:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-11-02 20:44:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2965. [2022-11-02 20:44:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2857 states have (on average 1.7798389919495974) internal successors, (5085), 2864 states have internal predecessors, (5085), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-11-02 20:44:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5240 transitions. [2022-11-02 20:44:14,114 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5240 transitions. Word has length 91 [2022-11-02 20:44:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:14,115 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 5240 transitions. [2022-11-02 20:44:14,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5240 transitions. [2022-11-02 20:44:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:14,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:14,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:14,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:44:14,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2085497615, now seen corresponding path program 1 times [2022-11-02 20:44:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:14,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483323606] [2022-11-02 20:44:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483323606] [2022-11-02 20:44:14,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483323606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:14,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:14,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:14,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678666760] [2022-11-02 20:44:14,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:14,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:14,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:14,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:14,266 INFO L87 Difference]: Start difference. First operand 2965 states and 5240 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:16,151 INFO L93 Difference]: Finished difference Result 4900 states and 8238 transitions. [2022-11-02 20:44:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:44:16,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:16,171 INFO L225 Difference]: With dead ends: 4900 [2022-11-02 20:44:16,171 INFO L226 Difference]: Without dead ends: 4068 [2022-11-02 20:44:16,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:44:16,176 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 4597 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 21164 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:16,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 21164 Invalid, 1392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:44:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-11-02 20:44:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3616. [2022-11-02 20:44:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3428 states have (on average 1.735997666277713) internal successors, (5951), 3439 states have internal predecessors, (5951), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-11-02 20:44:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 6232 transitions. [2022-11-02 20:44:16,401 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 6232 transitions. Word has length 91 [2022-11-02 20:44:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:16,402 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 6232 transitions. [2022-11-02 20:44:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 6232 transitions. [2022-11-02 20:44:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:16,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:16,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:44:16,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 298427123, now seen corresponding path program 1 times [2022-11-02 20:44:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:16,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221554563] [2022-11-02 20:44:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:16,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221554563] [2022-11-02 20:44:16,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221554563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:16,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:16,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980348548] [2022-11-02 20:44:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:16,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:16,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:16,600 INFO L87 Difference]: Start difference. First operand 3616 states and 6232 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:18,759 INFO L93 Difference]: Finished difference Result 7702 states and 12526 transitions. [2022-11-02 20:44:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:44:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:18,788 INFO L225 Difference]: With dead ends: 7702 [2022-11-02 20:44:18,789 INFO L226 Difference]: Without dead ends: 6219 [2022-11-02 20:44:18,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:18,803 INFO L413 NwaCegarLoop]: 4391 mSDtfsCounter, 4766 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 21146 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:18,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 21146 Invalid, 1371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:44:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-11-02 20:44:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 4908. [2022-11-02 20:44:19,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4568 states have (on average 1.6836690017513134) internal successors, (7691), 4587 states have internal predecessors, (7691), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-11-02 20:44:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8226 transitions. [2022-11-02 20:44:19,243 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8226 transitions. Word has length 91 [2022-11-02 20:44:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:19,243 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 8226 transitions. [2022-11-02 20:44:19,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8226 transitions. [2022-11-02 20:44:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:19,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:19,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:44:19,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -668923531, now seen corresponding path program 1 times [2022-11-02 20:44:19,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:19,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628173998] [2022-11-02 20:44:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:19,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628173998] [2022-11-02 20:44:19,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628173998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:19,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:19,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970778054] [2022-11-02 20:44:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:19,430 INFO L87 Difference]: Start difference. First operand 4908 states and 8226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:21,826 INFO L93 Difference]: Finished difference Result 12540 states and 20022 transitions. [2022-11-02 20:44:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:44:21,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:21,872 INFO L225 Difference]: With dead ends: 12540 [2022-11-02 20:44:21,872 INFO L226 Difference]: Without dead ends: 9765 [2022-11-02 20:44:21,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:21,882 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 4623 mSDsluCounter, 16752 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 21197 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:21,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 21197 Invalid, 1548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:44:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2022-11-02 20:44:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 7321. [2022-11-02 20:44:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 6685 states have (on average 1.6282722513089005) internal successors, (10885), 6720 states have internal predecessors, (10885), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-11-02 20:44:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 11966 transitions. [2022-11-02 20:44:22,446 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 11966 transitions. Word has length 91 [2022-11-02 20:44:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:22,446 INFO L495 AbstractCegarLoop]: Abstraction has 7321 states and 11966 transitions. [2022-11-02 20:44:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 11966 transitions. [2022-11-02 20:44:22,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:22,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:22,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:44:22,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1239534259, now seen corresponding path program 1 times [2022-11-02 20:44:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698104192] [2022-11-02 20:44:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:22,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698104192] [2022-11-02 20:44:22,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698104192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:22,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:22,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234852748] [2022-11-02 20:44:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:22,626 INFO L87 Difference]: Start difference. First operand 7321 states and 11966 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:25,475 INFO L93 Difference]: Finished difference Result 21439 states and 33876 transitions. [2022-11-02 20:44:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:44:25,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:25,548 INFO L225 Difference]: With dead ends: 21439 [2022-11-02 20:44:25,548 INFO L226 Difference]: Without dead ends: 16251 [2022-11-02 20:44:25,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:25,572 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 4686 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 21136 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:25,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 21136 Invalid, 1355 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:44:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2022-11-02 20:44:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 12290. [2022-11-02 20:44:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12290 states, 11078 states have (on average 1.5864777035565987) internal successors, (17575), 11145 states have internal predecessors, (17575), 756 states have call successors, (756), 391 states have call predecessors, (756), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-11-02 20:44:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 19878 transitions. [2022-11-02 20:44:26,831 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 19878 transitions. Word has length 91 [2022-11-02 20:44:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:26,832 INFO L495 AbstractCegarLoop]: Abstraction has 12290 states and 19878 transitions. [2022-11-02 20:44:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 19878 transitions. [2022-11-02 20:44:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:26,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:26,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:44:26,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 746908085, now seen corresponding path program 1 times [2022-11-02 20:44:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079769794] [2022-11-02 20:44:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:26,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079769794] [2022-11-02 20:44:26,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079769794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:26,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:26,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953347348] [2022-11-02 20:44:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:26,983 INFO L87 Difference]: Start difference. First operand 12290 states and 19878 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:30,789 INFO L93 Difference]: Finished difference Result 39094 states and 62122 transitions. [2022-11-02 20:44:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:44:30,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:30,903 INFO L225 Difference]: With dead ends: 39094 [2022-11-02 20:44:30,904 INFO L226 Difference]: Without dead ends: 28937 [2022-11-02 20:44:30,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:31,141 INFO L413 NwaCegarLoop]: 4376 mSDtfsCounter, 4646 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:31,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4662 Valid, 21131 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:44:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2022-11-02 20:44:32,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22195. [2022-11-02 20:44:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19863 states have (on average 1.5599355585762473) internal successors, (30985), 19994 states have internal predecessors, (30985), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-11-02 20:44:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 36154 transitions. [2022-11-02 20:44:32,938 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 36154 transitions. Word has length 91 [2022-11-02 20:44:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:32,938 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 36154 transitions. [2022-11-02 20:44:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 36154 transitions. [2022-11-02 20:44:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:32,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:32,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:32,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:44:32,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:32,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1700848243, now seen corresponding path program 1 times [2022-11-02 20:44:32,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:32,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753942127] [2022-11-02 20:44:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:32,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:33,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753942127] [2022-11-02 20:44:33,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753942127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:33,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:33,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356889154] [2022-11-02 20:44:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:33,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:44:33,165 INFO L87 Difference]: Start difference. First operand 22195 states and 36154 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:39,347 INFO L93 Difference]: Finished difference Result 73149 states and 118600 transitions. [2022-11-02 20:44:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:44:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:39,633 INFO L225 Difference]: With dead ends: 73149 [2022-11-02 20:44:39,633 INFO L226 Difference]: Without dead ends: 53087 [2022-11-02 20:44:39,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:39,719 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4591 mSDsluCounter, 16740 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 21117 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:39,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 21117 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:44:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53087 states. [2022-11-02 20:44:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53087 to 41916. [2022-11-02 20:44:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41916 states, 37424 states have (on average 1.546039974348012) internal successors, (57859), 37683 states have internal predecessors, (57859), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-11-02 20:44:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41916 states to 41916 states and 70074 transitions. [2022-11-02 20:44:43,287 INFO L78 Accepts]: Start accepts. Automaton has 41916 states and 70074 transitions. Word has length 91 [2022-11-02 20:44:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:43,289 INFO L495 AbstractCegarLoop]: Abstraction has 41916 states and 70074 transitions. [2022-11-02 20:44:43,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 41916 states and 70074 transitions. [2022-11-02 20:44:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:44:43,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:43,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:43,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:44:43,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 484694517, now seen corresponding path program 1 times [2022-11-02 20:44:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:43,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289389368] [2022-11-02 20:44:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:43,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289389368] [2022-11-02 20:44:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289389368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:43,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:43,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:44:43,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115778630] [2022-11-02 20:44:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:43,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:43,458 INFO L87 Difference]: Start difference. First operand 41916 states and 70074 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:51,063 INFO L93 Difference]: Finished difference Result 114784 states and 187983 transitions. [2022-11-02 20:44:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:44:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-11-02 20:44:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:51,340 INFO L225 Difference]: With dead ends: 114784 [2022-11-02 20:44:51,340 INFO L226 Difference]: Without dead ends: 75002 [2022-11-02 20:44:51,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:44:51,464 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 4788 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 16926 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:51,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 16926 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:44:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75002 states. [2022-11-02 20:44:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75002 to 61307. [2022-11-02 20:44:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61307 states, 54491 states have (on average 1.5260501734231342) internal successors, (83156), 55007 states have internal predecessors, (83156), 4122 states have call successors, (4122), 2309 states have call predecessors, (4122), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-11-02 20:44:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61307 states to 61307 states and 100403 transitions. [2022-11-02 20:44:57,835 INFO L78 Accepts]: Start accepts. Automaton has 61307 states and 100403 transitions. Word has length 91 [2022-11-02 20:44:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:57,836 INFO L495 AbstractCegarLoop]: Abstraction has 61307 states and 100403 transitions. [2022-11-02 20:44:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:44:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 61307 states and 100403 transitions. [2022-11-02 20:44:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:44:57,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:57,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:57,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:44:57,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash -908289339, now seen corresponding path program 1 times [2022-11-02 20:44:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415381595] [2022-11-02 20:44:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:44:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:44:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:44:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:44:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 20:44:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:44:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:44:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-02 20:44:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:44:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:58,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415381595] [2022-11-02 20:44:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415381595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583796940] [2022-11-02 20:44:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:58,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:58,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:58,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6295c048-772a-47b2-84c2-6f9983714638/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:44:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:44:58,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:44:58,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:58,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583796940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:58,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:58,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 20:44:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895141744] [2022-11-02 20:44:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:58,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:58,481 INFO L87 Difference]: Start difference. First operand 61307 states and 100403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)