./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/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 eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- 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 20:35:08,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:08,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:08,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:08,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:08,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:08,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:08,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:08,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:08,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:08,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:08,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:08,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:08,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:08,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:08,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:08,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:08,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:08,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:08,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:08,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:08,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:08,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:08,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:08,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:08,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:08,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:08,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:08,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:08,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:08,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:08,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:08,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:08,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:08,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:08,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:08,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:08,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:08,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:08,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:08,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:08,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:35:08,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:08,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:08,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:08,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:08,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:08,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:08,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:08,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:08,426 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:08,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:08,427 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:35:08,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:35:08,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:35:08,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:08,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:08,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:08,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:08,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:35:08,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:08,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:08,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:08,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:08,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:08,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:08,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:08,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:08,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:08,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:08,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:35:08,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:35:08,432 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:08,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:08,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:08,432 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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2022-11-02 20:35:08,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:08,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:08,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:08,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:08,705 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:08,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-11-02 20:35:08,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/data/297074f8b/0e53f908104e423ab1a4a79012f09377/FLAGc6efca74a [2022-11-02 20:35:09,838 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:09,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-11-02 20:35:09,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/data/297074f8b/0e53f908104e423ab1a4a79012f09377/FLAGc6efca74a [2022-11-02 20:35:10,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/data/297074f8b/0e53f908104e423ab1a4a79012f09377 [2022-11-02 20:35:10,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:10,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:10,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:10,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:10,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:10,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:10" (1/1) ... [2022-11-02 20:35:10,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b1db4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:10, skipping insertion in model container [2022-11-02 20:35:10,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:10" (1/1) ... [2022-11-02 20:35:10,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:10,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:12,814 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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-11-02 20:35:12,846 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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-11-02 20:35:13,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:13,157 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:14,451 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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-11-02 20:35:14,461 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_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-11-02 20:35:14,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:14,564 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:14,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14 WrapperNode [2022-11-02 20:35:14,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:14,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:14,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:14,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:14,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:14,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,122 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-02 20:35:15,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:15,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:15,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:15,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:15,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,652 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:15,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:15,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:15,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:15,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (1/1) ... [2022-11-02 20:35:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:15,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:15,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3356a7d-41ba-446c-86f6-4ebf9b9dc663/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:35:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 20:35:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 20:35:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:35:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:35:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 20:35:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 20:35:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 20:35:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 20:35:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 20:35:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 20:35:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 20:35:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 20:35:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:35:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:16,002 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:16,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:25,046 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:25,075 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:25,076 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-02 20:35:25,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:25 BoogieIcfgContainer [2022-11-02 20:35:25,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:25,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:25,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:25,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:25,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:10" (1/3) ... [2022-11-02 20:35:25,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c796c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:25, skipping insertion in model container [2022-11-02 20:35:25,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:14" (2/3) ... [2022-11-02 20:35:25,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c796c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:25, skipping insertion in model container [2022-11-02 20:35:25,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:25" (3/3) ... [2022-11-02 20:35:25,094 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2022-11-02 20:35:25,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:25,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:35:25,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:25,237 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;@7b2b9572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:25,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:35:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-02 20:35:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:25,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:25,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:25,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:25,294 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-11-02 20:35:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:25,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36925320] [2022-11-02 20:35:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:25,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:25,818 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 20:35:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:25,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36925320] [2022-11-02 20:35:25,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36925320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:25,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:25,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225294419] [2022-11-02 20:35:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:25,861 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:27,737 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-11-02 20:35:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:35:27,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:27,771 INFO L225 Difference]: With dead ends: 5081 [2022-11-02 20:35:27,771 INFO L226 Difference]: Without dead ends: 2532 [2022-11-02 20:35:27,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:27,788 INFO L413 NwaCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16932 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:27,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 16932 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:35:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-02 20:35:27,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-11-02 20:35:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-02 20:35:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-11-02 20:35:27,991 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-11-02 20:35:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:27,992 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-11-02 20:35:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-11-02 20:35:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:27,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:27,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:35:27,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-11-02 20:35:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954113670] [2022-11-02 20:35:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:28,467 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 20:35:28,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954113670] [2022-11-02 20:35:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954113670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:28,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:28,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:35:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191220747] [2022-11-02 20:35:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:28,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:35:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:35:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:35:28,476 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:31,551 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-11-02 20:35:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:35:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:31,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:31,568 INFO L225 Difference]: With dead ends: 3223 [2022-11-02 20:35:31,568 INFO L226 Difference]: Without dead ends: 2938 [2022-11-02 20:35:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:35:31,575 INFO L413 NwaCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17145 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:31,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 17145 Invalid, 1681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:35:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-11-02 20:35:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-11-02 20:35:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-02 20:35:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-11-02 20:35:31,719 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-11-02 20:35:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:31,720 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-11-02 20:35:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-11-02 20:35:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:31,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:31,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:35:31,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-11-02 20:35:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:31,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697662530] [2022-11-02 20:35:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:32,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:32,143 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 20:35:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:32,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697662530] [2022-11-02 20:35:32,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697662530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:32,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:32,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427071517] [2022-11-02 20:35:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:32,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:32,151 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:36,361 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-11-02 20:35:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:35:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:36,398 INFO L225 Difference]: With dead ends: 3941 [2022-11-02 20:35:36,398 INFO L226 Difference]: Without dead ends: 3358 [2022-11-02 20:35:36,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:35:36,408 INFO L413 NwaCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22069 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:36,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 22069 Invalid, 2520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:35:36,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-11-02 20:35:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-11-02 20:35:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-11-02 20:35:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-11-02 20:35:36,640 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-11-02 20:35:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:36,641 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-11-02 20:35:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-11-02 20:35:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:36,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:36,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:35:36,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:36,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-11-02 20:35:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:36,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425684962] [2022-11-02 20:35:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:37,054 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 20:35:37,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:37,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425684962] [2022-11-02 20:35:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425684962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:37,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094235706] [2022-11-02 20:35:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:37,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:37,060 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:41,750 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-11-02 20:35:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:35:41,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:41,775 INFO L225 Difference]: With dead ends: 4998 [2022-11-02 20:35:41,776 INFO L226 Difference]: Without dead ends: 4138 [2022-11-02 20:35:41,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:35:41,794 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22057 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:41,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 22057 Invalid, 2511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 20:35:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-11-02 20:35:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-11-02 20:35:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-02 20:35:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-11-02 20:35:42,074 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-11-02 20:35:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:42,075 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-11-02 20:35:42,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-11-02 20:35:42,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:42,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:42,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:35:42,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-11-02 20:35:42,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:42,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447483448] [2022-11-02 20:35:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:42,396 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 20:35:42,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:42,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447483448] [2022-11-02 20:35:42,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447483448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:42,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:42,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816448674] [2022-11-02 20:35:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:42,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:42,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:42,402 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:47,212 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-11-02 20:35:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:35:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:47,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:47,242 INFO L225 Difference]: With dead ends: 7038 [2022-11-02 20:35:47,242 INFO L226 Difference]: Without dead ends: 5620 [2022-11-02 20:35:47,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:35:47,249 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:47,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5196 Valid, 22052 Invalid, 2503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-02 20:35:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-11-02 20:35:47,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-11-02 20:35:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-11-02 20:35:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-11-02 20:35:47,706 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-11-02 20:35:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:47,706 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-11-02 20:35:47,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-11-02 20:35:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:47,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:47,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:47,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:35:47,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-11-02 20:35:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:47,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104294559] [2022-11-02 20:35:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:48,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:48,063 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 20:35:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:48,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104294559] [2022-11-02 20:35:48,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104294559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:48,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:48,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668546352] [2022-11-02 20:35:48,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:48,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:48,067 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:52,814 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-11-02 20:35:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:35:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:52,866 INFO L225 Difference]: With dead ends: 11117 [2022-11-02 20:35:52,867 INFO L226 Difference]: Without dead ends: 8582 [2022-11-02 20:35:52,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:35:52,880 INFO L413 NwaCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:52,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 22047 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:35:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-11-02 20:35:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-11-02 20:35:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-11-02 20:35:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-11-02 20:35:53,739 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-11-02 20:35:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:53,740 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-11-02 20:35:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-11-02 20:35:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:35:53,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:53,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:53,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:35:53,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:53,747 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-11-02 20:35:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:53,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776801692] [2022-11-02 20:35:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:53,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:35:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:35:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:35:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:35:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:35:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:54,040 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 20:35:54,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:54,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776801692] [2022-11-02 20:35:54,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776801692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:54,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:54,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62171774] [2022-11-02 20:35:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:54,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:54,043 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:35:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:58,986 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-11-02 20:35:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:35:58,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:35:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:59,056 INFO L225 Difference]: With dead ends: 19276 [2022-11-02 20:35:59,056 INFO L226 Difference]: Without dead ends: 14500 [2022-11-02 20:35:59,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:35:59,084 INFO L413 NwaCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5272 Valid, 21355 Invalid, 2260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-02 20:35:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-11-02 20:36:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-11-02 20:36:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-02 20:36:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-11-02 20:36:00,533 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-11-02 20:36:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:00,534 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-11-02 20:36:00,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-11-02 20:36:00,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:36:00,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:00,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:36:00,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-11-02 20:36:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497079854] [2022-11-02 20:36:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:36:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:36:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:36:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:36:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:36:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:00,858 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 20:36:00,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:00,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497079854] [2022-11-02 20:36:00,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497079854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:00,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:00,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238188613] [2022-11-02 20:36:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:00,862 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:04,114 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-11-02 20:36:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:36:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:36:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:04,185 INFO L225 Difference]: With dead ends: 23942 [2022-11-02 20:36:04,185 INFO L226 Difference]: Without dead ends: 14669 [2022-11-02 20:36:04,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:36:04,225 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21017 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:04,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 21017 Invalid, 1225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:36:04,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-11-02 20:36:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-11-02 20:36:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-02 20:36:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-11-02 20:36:05,566 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-11-02 20:36:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:05,566 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-11-02 20:36:05,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-11-02 20:36:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:36:05,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:05,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:05,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:36:05,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-11-02 20:36:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:05,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603681218] [2022-11-02 20:36:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:36:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:36:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:36:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:36:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:36:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:05,861 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 20:36:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:05,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603681218] [2022-11-02 20:36:05,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603681218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:05,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:05,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208930948] [2022-11-02 20:36:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:05,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:05,866 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:11,792 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-11-02 20:36:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:36:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:36:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:11,897 INFO L225 Difference]: With dead ends: 35561 [2022-11-02 20:36:11,897 INFO L226 Difference]: Without dead ends: 26288 [2022-11-02 20:36:11,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:36:11,927 INFO L413 NwaCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:11,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 22031 Invalid, 2460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:36:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-11-02 20:36:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-11-02 20:36:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-11-02 20:36:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-11-02 20:36:13,981 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-11-02 20:36:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:13,982 INFO L495 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-11-02 20:36:13,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-11-02 20:36:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:36:14,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:14,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:36:14,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-11-02 20:36:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:14,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840669312] [2022-11-02 20:36:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:36:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:36:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:36:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:36:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:36:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,228 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 20:36:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:14,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840669312] [2022-11-02 20:36:14,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840669312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:14,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:14,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931541712] [2022-11-02 20:36:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:14,231 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:22,745 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-11-02 20:36:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:36:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-02 20:36:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:22,955 INFO L225 Difference]: With dead ends: 68201 [2022-11-02 20:36:22,955 INFO L226 Difference]: Without dead ends: 49870 [2022-11-02 20:36:23,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:36:23,014 INFO L413 NwaCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22024 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5188 Valid, 22024 Invalid, 2452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:36:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-11-02 20:36:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-11-02 20:36:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-11-02 20:36:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-11-02 20:36:27,477 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-11-02 20:36:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:27,478 INFO L495 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-11-02 20:36:27,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:36:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-11-02 20:36:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:36:27,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:27,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:27,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:36:27,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:27,513 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-11-02 20:36:27,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:27,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279855978] [2022-11-02 20:36:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:27,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:36:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:36:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:36:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:36:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 20:36:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:27,943 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 20:36:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:27,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279855978] [2022-11-02 20:36:27,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279855978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:27,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:27,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122346133] [2022-11-02 20:36:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:27,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:27,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:27,946 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)