./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:10,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:10,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:01:10,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:10,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:10,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:10,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:10,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:10,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:10,557 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:10,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:10,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:10,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:10,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:10,561 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:10,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:10,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:10,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:10,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:10,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:10,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:10,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:10,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:10,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:10,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:10,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:10,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:10,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:10,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:10,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:10,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:10,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:10,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:10,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:10,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:10,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:10,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:10,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:10,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:10,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:10,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:10,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:10,583 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2023-11-26 12:01:10,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:11,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:11,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:11,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:11,022 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:11,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-11-26 12:01:14,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:14,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:14,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-11-26 12:01:14,856 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/data/1ee430702/3cc93c4cae024340b96965c3679a327e/FLAG1710c437f [2023-11-26 12:01:14,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/data/1ee430702/3cc93c4cae024340b96965c3679a327e [2023-11-26 12:01:14,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:14,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:14,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:14,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:14,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:14,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:14" (1/1) ... [2023-11-26 12:01:14,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b58b208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:14, skipping insertion in model container [2023-11-26 12:01:14,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:14" (1/1) ... [2023-11-26 12:01:14,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:15,099 WARN L240 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_706c9d17-7176-43fb-8213-6cfe13aaf700/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2023-11-26 12:01:15,150 WARN L240 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_706c9d17-7176-43fb-8213-6cfe13aaf700/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2023-11-26 12:01:15,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:15,216 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:15,229 WARN L240 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_706c9d17-7176-43fb-8213-6cfe13aaf700/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2023-11-26 12:01:15,254 WARN L240 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_706c9d17-7176-43fb-8213-6cfe13aaf700/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2023-11-26 12:01:15,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:15,342 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:15,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15 WrapperNode [2023-11-26 12:01:15,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:15,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:15,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:15,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:15,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,431 INFO L138 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 530 [2023-11-26 12:01:15,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:15,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:15,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:15,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:15,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,492 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:01:15,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:15,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:15,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:15,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:15,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (1/1) ... [2023-11-26 12:01:15,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:15,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:15,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:15,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-26 12:01:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-26 12:01:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-26 12:01:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-26 12:01:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-26 12:01:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-26 12:01:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-26 12:01:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-26 12:01:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-26 12:01:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-26 12:01:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-26 12:01:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-26 12:01:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-26 12:01:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-26 12:01:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-26 12:01:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-26 12:01:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-26 12:01:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-26 12:01:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-26 12:01:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-26 12:01:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-26 12:01:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-26 12:01:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:01:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-26 12:01:15,661 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-26 12:01:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-26 12:01:15,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-26 12:01:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:15,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-26 12:01:15,662 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-26 12:01:15,821 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:15,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:16,536 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:16,609 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:16,610 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 12:01:16,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:16 BoogieIcfgContainer [2023-11-26 12:01:16,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:16,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:16,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:16,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:16,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:14" (1/3) ... [2023-11-26 12:01:16,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6dabdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:16, skipping insertion in model container [2023-11-26 12:01:16,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:15" (2/3) ... [2023-11-26 12:01:16,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6dabdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:16, skipping insertion in model container [2023-11-26 12:01:16,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:16" (3/3) ... [2023-11-26 12:01:16,623 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-11-26 12:01:16,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:16,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:01:16,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:16,711 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=LoopHeads, 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;@3373511f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:16,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 12:01:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 184 states have (on average 1.6521739130434783) internal successors, (304), 190 states have internal predecessors, (304), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 12:01:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:16,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:16,748 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] [2023-11-26 12:01:16,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:16,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash -917654171, now seen corresponding path program 1 times [2023-11-26 12:01:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485195973] [2023-11-26 12:01:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:17,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485195973] [2023-11-26 12:01:17,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485195973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:17,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:17,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:01:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718474396] [2023-11-26 12:01:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:17,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:17,585 INFO L87 Difference]: Start difference. First operand has 232 states, 184 states have (on average 1.6521739130434783) internal successors, (304), 190 states have internal predecessors, (304), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:19,138 INFO L93 Difference]: Finished difference Result 573 states and 901 transitions. [2023-11-26 12:01:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:01:19,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-11-26 12:01:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:19,168 INFO L225 Difference]: With dead ends: 573 [2023-11-26 12:01:19,169 INFO L226 Difference]: Without dead ends: 352 [2023-11-26 12:01:19,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:19,187 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 641 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:19,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 875 Invalid, 1003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 12:01:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-26 12:01:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2023-11-26 12:01:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 249 states have (on average 1.502008032128514) internal successors, (374), 255 states have internal predecessors, (374), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2023-11-26 12:01:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 461 transitions. [2023-11-26 12:01:19,305 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 461 transitions. Word has length 58 [2023-11-26 12:01:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:19,306 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 461 transitions. [2023-11-26 12:01:19,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 461 transitions. [2023-11-26 12:01:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:19,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:19,313 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] [2023-11-26 12:01:19,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:19,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:19,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2008816218, now seen corresponding path program 1 times [2023-11-26 12:01:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586549928] [2023-11-26 12:01:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:19,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:19,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586549928] [2023-11-26 12:01:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586549928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:19,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:19,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:01:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351670365] [2023-11-26 12:01:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:19,700 INFO L87 Difference]: Start difference. First operand 315 states and 461 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:21,178 INFO L93 Difference]: Finished difference Result 635 states and 911 transitions. [2023-11-26 12:01:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 12:01:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-11-26 12:01:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:21,196 INFO L225 Difference]: With dead ends: 635 [2023-11-26 12:01:21,197 INFO L226 Difference]: Without dead ends: 473 [2023-11-26 12:01:21,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:01:21,200 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 840 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:21,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 944 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 12:01:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-26 12:01:21,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 403. [2023-11-26 12:01:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 317 states have (on average 1.4826498422712935) internal successors, (470), 325 states have internal predecessors, (470), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2023-11-26 12:01:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 587 transitions. [2023-11-26 12:01:21,300 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 587 transitions. Word has length 58 [2023-11-26 12:01:21,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:21,301 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 587 transitions. [2023-11-26 12:01:21,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 587 transitions. [2023-11-26 12:01:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:21,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:21,310 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] [2023-11-26 12:01:21,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:21,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:21,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -80543516, now seen corresponding path program 1 times [2023-11-26 12:01:21,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:21,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478925689] [2023-11-26 12:01:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478925689] [2023-11-26 12:01:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478925689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:21,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:21,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:01:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571880088] [2023-11-26 12:01:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:01:21,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:01:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:21,565 INFO L87 Difference]: Start difference. First operand 403 states and 587 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:22,616 INFO L93 Difference]: Finished difference Result 679 states and 976 transitions. [2023-11-26 12:01:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:22,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-11-26 12:01:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:22,623 INFO L225 Difference]: With dead ends: 679 [2023-11-26 12:01:22,623 INFO L226 Difference]: Without dead ends: 435 [2023-11-26 12:01:22,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:22,628 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 405 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:22,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1076 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:01:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-26 12:01:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 407. [2023-11-26 12:01:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 320 states have (on average 1.471875) internal successors, (471), 328 states have internal predecessors, (471), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2023-11-26 12:01:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 589 transitions. [2023-11-26 12:01:22,702 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 589 transitions. Word has length 58 [2023-11-26 12:01:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:22,703 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 589 transitions. [2023-11-26 12:01:22,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 589 transitions. [2023-11-26 12:01:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:22,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:22,709 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] [2023-11-26 12:01:22,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:22,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:22,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1970440482, now seen corresponding path program 1 times [2023-11-26 12:01:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686941299] [2023-11-26 12:01:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686941299] [2023-11-26 12:01:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686941299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:22,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:22,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:01:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726930320] [2023-11-26 12:01:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:01:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:01:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:01:22,931 INFO L87 Difference]: Start difference. First operand 407 states and 589 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:23,942 INFO L93 Difference]: Finished difference Result 697 states and 994 transitions. [2023-11-26 12:01:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:01:23,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-11-26 12:01:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:23,947 INFO L225 Difference]: With dead ends: 697 [2023-11-26 12:01:23,947 INFO L226 Difference]: Without dead ends: 449 [2023-11-26 12:01:23,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:23,952 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 276 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:23,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1203 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:01:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-26 12:01:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 419. [2023-11-26 12:01:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 329 states have (on average 1.458966565349544) internal successors, (480), 337 states have internal predecessors, (480), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2023-11-26 12:01:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 601 transitions. [2023-11-26 12:01:24,005 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 601 transitions. Word has length 58 [2023-11-26 12:01:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:24,007 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 601 transitions. [2023-11-26 12:01:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 601 transitions. [2023-11-26 12:01:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:24,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:24,010 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] [2023-11-26 12:01:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:24,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:24,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2032480096, now seen corresponding path program 1 times [2023-11-26 12:01:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:24,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374038117] [2023-11-26 12:01:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:24,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374038117] [2023-11-26 12:01:24,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374038117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:24,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:24,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:01:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018879774] [2023-11-26 12:01:24,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:24,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:24,265 INFO L87 Difference]: Start difference. First operand 419 states and 601 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:25,422 INFO L93 Difference]: Finished difference Result 775 states and 1076 transitions. [2023-11-26 12:01:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 12:01:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-11-26 12:01:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:25,428 INFO L225 Difference]: With dead ends: 775 [2023-11-26 12:01:25,428 INFO L226 Difference]: Without dead ends: 517 [2023-11-26 12:01:25,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-26 12:01:25,430 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 824 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:25,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 776 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 12:01:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-26 12:01:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 429. [2023-11-26 12:01:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 337 states have (on average 1.4480712166172107) internal successors, (488), 345 states have internal predecessors, (488), 54 states have call successors, (54), 29 states have call predecessors, (54), 36 states have return successors, (67), 58 states have call predecessors, (67), 52 states have call successors, (67) [2023-11-26 12:01:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 609 transitions. [2023-11-26 12:01:25,473 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 609 transitions. Word has length 58 [2023-11-26 12:01:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:25,474 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 609 transitions. [2023-11-26 12:01:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 609 transitions. [2023-11-26 12:01:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:01:25,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:25,476 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] [2023-11-26 12:01:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:25,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:25,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1839785374, now seen corresponding path program 1 times [2023-11-26 12:01:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725772386] [2023-11-26 12:01:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:25,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:25,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725772386] [2023-11-26 12:01:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725772386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:25,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:25,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:25,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630436888] [2023-11-26 12:01:25,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:25,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:25,615 INFO L87 Difference]: Start difference. First operand 429 states and 609 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:26,394 INFO L93 Difference]: Finished difference Result 1011 states and 1396 transitions. [2023-11-26 12:01:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:01:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-11-26 12:01:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:26,400 INFO L225 Difference]: With dead ends: 1011 [2023-11-26 12:01:26,400 INFO L226 Difference]: Without dead ends: 744 [2023-11-26 12:01:26,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:26,402 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 807 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:26,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 598 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:01:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-11-26 12:01:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 690. [2023-11-26 12:01:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 532 states have (on average 1.4022556390977443) internal successors, (746), 547 states have internal predecessors, (746), 89 states have call successors, (89), 51 states have call predecessors, (89), 67 states have return successors, (124), 98 states have call predecessors, (124), 87 states have call successors, (124) [2023-11-26 12:01:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 959 transitions. [2023-11-26 12:01:26,464 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 959 transitions. Word has length 58 [2023-11-26 12:01:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:26,464 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 959 transitions. [2023-11-26 12:01:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:01:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 959 transitions. [2023-11-26 12:01:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 12:01:26,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:26,468 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] [2023-11-26 12:01:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:26,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:26,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1289341817, now seen corresponding path program 1 times [2023-11-26 12:01:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551342683] [2023-11-26 12:01:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551342683] [2023-11-26 12:01:26,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551342683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:26,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131471458] [2023-11-26 12:01:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:26,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:26,567 INFO L87 Difference]: Start difference. First operand 690 states and 959 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:27,293 INFO L93 Difference]: Finished difference Result 1774 states and 2405 transitions. [2023-11-26 12:01:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-11-26 12:01:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:27,303 INFO L225 Difference]: With dead ends: 1774 [2023-11-26 12:01:27,303 INFO L226 Difference]: Without dead ends: 1255 [2023-11-26 12:01:27,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:27,306 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 643 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:27,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 631 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-11-26 12:01:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1101. [2023-11-26 12:01:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 843 states have (on average 1.3594306049822065) internal successors, (1146), 865 states have internal predecessors, (1146), 138 states have call successors, (138), 93 states have call predecessors, (138), 118 states have return successors, (194), 149 states have call predecessors, (194), 136 states have call successors, (194) [2023-11-26 12:01:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1478 transitions. [2023-11-26 12:01:27,416 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1478 transitions. Word has length 59 [2023-11-26 12:01:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:27,416 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1478 transitions. [2023-11-26 12:01:27,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1478 transitions. [2023-11-26 12:01:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 12:01:27,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:27,419 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] [2023-11-26 12:01:27,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:01:27,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:27,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash -574964482, now seen corresponding path program 1 times [2023-11-26 12:01:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657655666] [2023-11-26 12:01:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:27,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:27,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657655666] [2023-11-26 12:01:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657655666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:27,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:27,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:27,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233951990] [2023-11-26 12:01:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:27,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:27,504 INFO L87 Difference]: Start difference. First operand 1101 states and 1478 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:28,287 INFO L93 Difference]: Finished difference Result 3061 states and 4041 transitions. [2023-11-26 12:01:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-11-26 12:01:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:28,301 INFO L225 Difference]: With dead ends: 3061 [2023-11-26 12:01:28,301 INFO L226 Difference]: Without dead ends: 2101 [2023-11-26 12:01:28,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:28,308 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 619 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:28,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 571 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-11-26 12:01:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1917. [2023-11-26 12:01:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1461 states have (on average 1.326488706365503) internal successors, (1938), 1489 states have internal predecessors, (1938), 232 states have call successors, (232), 179 states have call predecessors, (232), 222 states have return successors, (332), 255 states have call predecessors, (332), 230 states have call successors, (332) [2023-11-26 12:01:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2502 transitions. [2023-11-26 12:01:28,468 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2502 transitions. Word has length 60 [2023-11-26 12:01:28,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 2502 transitions. [2023-11-26 12:01:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2502 transitions. [2023-11-26 12:01:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 12:01:28,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:28,473 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] [2023-11-26 12:01:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:01:28,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:28,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1978334883, now seen corresponding path program 1 times [2023-11-26 12:01:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279141642] [2023-11-26 12:01:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279141642] [2023-11-26 12:01:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279141642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857090453] [2023-11-26 12:01:28,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:28,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:28,573 INFO L87 Difference]: Start difference. First operand 1917 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:29,356 INFO L93 Difference]: Finished difference Result 4581 states and 5906 transitions. [2023-11-26 12:01:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:29,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-26 12:01:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:29,376 INFO L225 Difference]: With dead ends: 4581 [2023-11-26 12:01:29,376 INFO L226 Difference]: Without dead ends: 2825 [2023-11-26 12:01:29,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:29,384 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 631 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:29,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 643 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2023-11-26 12:01:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2583. [2023-11-26 12:01:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1963 states have (on average 1.3122771268466633) internal successors, (2576), 1999 states have internal predecessors, (2576), 312 states have call successors, (312), 249 states have call predecessors, (312), 306 states have return successors, (441), 341 states have call predecessors, (441), 310 states have call successors, (441) [2023-11-26 12:01:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3329 transitions. [2023-11-26 12:01:29,642 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3329 transitions. Word has length 66 [2023-11-26 12:01:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:29,642 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 3329 transitions. [2023-11-26 12:01:29,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:01:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3329 transitions. [2023-11-26 12:01:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 12:01:29,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:29,650 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:01:29,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1715112493, now seen corresponding path program 1 times [2023-11-26 12:01:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:29,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469376640] [2023-11-26 12:01:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:29,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:29,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469376640] [2023-11-26 12:01:29,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469376640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:29,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:29,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:29,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510152900] [2023-11-26 12:01:29,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:29,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:29,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:29,785 INFO L87 Difference]: Start difference. First operand 2583 states and 3329 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 12:01:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:30,691 INFO L93 Difference]: Finished difference Result 3303 states and 4206 transitions. [2023-11-26 12:01:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-11-26 12:01:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:30,714 INFO L225 Difference]: With dead ends: 3303 [2023-11-26 12:01:30,714 INFO L226 Difference]: Without dead ends: 3300 [2023-11-26 12:01:30,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:01:30,717 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1132 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:30,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 483 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:01:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-11-26 12:01:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3033. [2023-11-26 12:01:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2304 states have (on average 1.3038194444444444) internal successors, (3004), 2345 states have internal predecessors, (3004), 362 states have call successors, (362), 293 states have call predecessors, (362), 365 states have return successors, (520), 401 states have call predecessors, (520), 361 states have call successors, (520) [2023-11-26 12:01:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3886 transitions. [2023-11-26 12:01:31,079 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3886 transitions. Word has length 67 [2023-11-26 12:01:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:31,080 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 3886 transitions. [2023-11-26 12:01:31,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 12:01:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3886 transitions. [2023-11-26 12:01:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 12:01:31,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:31,083 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:31,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:31,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1629656985, now seen corresponding path program 1 times [2023-11-26 12:01:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681091699] [2023-11-26 12:01:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681091699] [2023-11-26 12:01:31,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681091699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200439870] [2023-11-26 12:01:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:31,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:31,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:31,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:01:31,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:31,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200439870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:31,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-26 12:01:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653194959] [2023-11-26 12:01:31,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:31,855 INFO L87 Difference]: Start difference. First operand 3033 states and 3886 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 12:01:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:33,933 INFO L93 Difference]: Finished difference Result 7100 states and 8998 transitions. [2023-11-26 12:01:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-26 12:01:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-11-26 12:01:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:33,980 INFO L225 Difference]: With dead ends: 7100 [2023-11-26 12:01:33,980 INFO L226 Difference]: Without dead ends: 7097 [2023-11-26 12:01:33,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-26 12:01:33,984 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1331 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:33,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1195 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:01:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2023-11-26 12:01:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 4659. [2023-11-26 12:01:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3544 states have (on average 1.3024830699774266) internal successors, (4616), 3607 states have internal predecessors, (4616), 546 states have call successors, (546), 451 states have call predecessors, (546), 567 states have return successors, (798), 607 states have call predecessors, (798), 545 states have call successors, (798) [2023-11-26 12:01:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5960 transitions. [2023-11-26 12:01:34,585 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5960 transitions. Word has length 68 [2023-11-26 12:01:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:34,586 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 5960 transitions. [2023-11-26 12:01:34,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 12:01:34,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5960 transitions. [2023-11-26 12:01:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:34,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:34,590 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:34,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:34,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706c9d17-7176-43fb-8213-6cfe13aaf700/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 12:01:34,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:34,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 228963667, now seen corresponding path program 2 times [2023-11-26 12:01:34,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:34,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226001306] [2023-11-26 12:01:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:34,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:01:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:01:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:01:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:01:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 12:01:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:01:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226001306] [2023-11-26 12:01:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226001306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413451833] [2023-11-26 12:01:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:34,894 INFO L87 Difference]: Start difference. First operand 4659 states and 5960 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 12:01:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:35,783 INFO L93 Difference]: Finished difference Result 7115 states and 9107 transitions. [2023-11-26 12:01:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:35,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-11-26 12:01:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:35,807 INFO L225 Difference]: With dead ends: 7115 [2023-11-26 12:01:35,807 INFO L226 Difference]: Without dead ends: 3412 [2023-11-26 12:01:35,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:35,818 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 690 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:35,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 561 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:01:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2023-11-26 12:01:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3183. [2023-11-26 12:01:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2424 states have (on average 1.2821782178217822) internal successors, (3108), 2465 states have internal predecessors, (3108), 378 states have call successors, (378), 307 states have call predecessors, (378), 379 states have return successors, (524), 417 states have call predecessors, (524), 377 states have call successors, (524) [2023-11-26 12:01:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4010 transitions. [2023-11-26 12:01:36,194 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4010 transitions. Word has length 71 [2023-11-26 12:01:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:36,194 INFO L495 AbstractCegarLoop]: Abstraction has 3183 states and 4010 transitions. [2023-11-26 12:01:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-26 12:01:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4010 transitions. [2023-11-26 12:01:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:36,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:36,198 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] [2023-11-26 12:01:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:01:36,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:36,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1733702944, now seen corresponding path program 1 times [2023-11-26 12:01:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858841602] [2023-11-26 12:01:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:36,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858841602] [2023-11-26 12:01:36,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858841602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:36,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:36,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319250441] [2023-11-26 12:01:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:36,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:36,326 INFO L87 Difference]: Start difference. First operand 3183 states and 4010 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-26 12:01:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:38,022 INFO L93 Difference]: Finished difference Result 3524 states and 4550 transitions. [2023-11-26 12:01:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:38,046 INFO L225 Difference]: With dead ends: 3524 [2023-11-26 12:01:38,046 INFO L226 Difference]: Without dead ends: 3394 [2023-11-26 12:01:38,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:38,049 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 698 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:38,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 615 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 12:01:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2023-11-26 12:01:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3315. [2023-11-26 12:01:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2537 states have (on average 1.2948364209696492) internal successors, (3285), 2579 states have internal predecessors, (3285), 390 states have call successors, (390), 313 states have call predecessors, (390), 386 states have return successors, (539), 429 states have call predecessors, (539), 389 states have call successors, (539) [2023-11-26 12:01:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4214 transitions. [2023-11-26 12:01:38,565 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4214 transitions. Word has length 71 [2023-11-26 12:01:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:38,566 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4214 transitions. [2023-11-26 12:01:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-26 12:01:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4214 transitions. [2023-11-26 12:01:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:38,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:38,570 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] [2023-11-26 12:01:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:01:38,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1860015964, now seen corresponding path program 1 times [2023-11-26 12:01:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981856110] [2023-11-26 12:01:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:38,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:38,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981856110] [2023-11-26 12:01:38,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981856110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:38,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:38,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:38,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608999075] [2023-11-26 12:01:38,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:38,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:38,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:38,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:38,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:38,732 INFO L87 Difference]: Start difference. First operand 3315 states and 4214 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:40,709 INFO L93 Difference]: Finished difference Result 3829 states and 5020 transitions. [2023-11-26 12:01:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:01:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:40,733 INFO L225 Difference]: With dead ends: 3829 [2023-11-26 12:01:40,733 INFO L226 Difference]: Without dead ends: 3567 [2023-11-26 12:01:40,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:40,736 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 697 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:40,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1021 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 12:01:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2023-11-26 12:01:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3438. [2023-11-26 12:01:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 2641 states have (on average 1.3040514956455889) internal successors, (3444), 2684 states have internal predecessors, (3444), 402 states have call successors, (402), 319 states have call predecessors, (402), 393 states have return successors, (553), 442 states have call predecessors, (553), 401 states have call successors, (553) [2023-11-26 12:01:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 4399 transitions. [2023-11-26 12:01:41,237 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 4399 transitions. Word has length 71 [2023-11-26 12:01:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 3438 states and 4399 transitions. [2023-11-26 12:01:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 4399 transitions. [2023-11-26 12:01:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:41,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:41,242 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] [2023-11-26 12:01:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:01:41,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1426286878, now seen corresponding path program 1 times [2023-11-26 12:01:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185699857] [2023-11-26 12:01:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:41,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:41,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185699857] [2023-11-26 12:01:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185699857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:41,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:41,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:41,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429572784] [2023-11-26 12:01:41,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:41,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:41,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:41,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:41,388 INFO L87 Difference]: Start difference. First operand 3438 states and 4399 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:43,463 INFO L93 Difference]: Finished difference Result 4275 states and 5707 transitions. [2023-11-26 12:01:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:01:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:43,495 INFO L225 Difference]: With dead ends: 4275 [2023-11-26 12:01:43,496 INFO L226 Difference]: Without dead ends: 3890 [2023-11-26 12:01:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:01:43,504 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 695 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:43,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1019 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 12:01:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2023-11-26 12:01:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3685. [2023-11-26 12:01:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2850 states have (on average 1.3203508771929824) internal successors, (3763), 2895 states have internal predecessors, (3763), 426 states have call successors, (426), 331 states have call predecessors, (426), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2023-11-26 12:01:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4774 transitions. [2023-11-26 12:01:44,083 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4774 transitions. Word has length 71 [2023-11-26 12:01:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:44,083 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4774 transitions. [2023-11-26 12:01:44,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4774 transitions. [2023-11-26 12:01:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:44,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:44,088 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] [2023-11-26 12:01:44,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:01:44,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:44,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash -165369628, now seen corresponding path program 1 times [2023-11-26 12:01:44,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375414277] [2023-11-26 12:01:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:44,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:44,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375414277] [2023-11-26 12:01:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375414277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:44,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930486888] [2023-11-26 12:01:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:44,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:44,259 INFO L87 Difference]: Start difference. First operand 3685 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:45,587 INFO L93 Difference]: Finished difference Result 4512 states and 6075 transitions. [2023-11-26 12:01:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:45,601 INFO L225 Difference]: With dead ends: 4512 [2023-11-26 12:01:45,601 INFO L226 Difference]: Without dead ends: 3880 [2023-11-26 12:01:45,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:45,606 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 578 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:45,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 629 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 12:01:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2023-11-26 12:01:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3685. [2023-11-26 12:01:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2850 states have (on average 1.31859649122807) internal successors, (3758), 2895 states have internal predecessors, (3758), 426 states have call successors, (426), 331 states have call predecessors, (426), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2023-11-26 12:01:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4769 transitions. [2023-11-26 12:01:46,162 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4769 transitions. Word has length 71 [2023-11-26 12:01:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:46,163 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4769 transitions. [2023-11-26 12:01:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4769 transitions. [2023-11-26 12:01:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:46,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:46,167 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] [2023-11-26 12:01:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:01:46,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:46,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash -124694878, now seen corresponding path program 1 times [2023-11-26 12:01:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294104512] [2023-11-26 12:01:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294104512] [2023-11-26 12:01:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294104512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:46,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:46,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123583660] [2023-11-26 12:01:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:46,306 INFO L87 Difference]: Start difference. First operand 3685 states and 4769 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:48,670 INFO L93 Difference]: Finished difference Result 5303 states and 7264 transitions. [2023-11-26 12:01:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:01:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:48,687 INFO L225 Difference]: With dead ends: 5303 [2023-11-26 12:01:48,687 INFO L226 Difference]: Without dead ends: 4671 [2023-11-26 12:01:48,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:48,692 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 712 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1012 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 12:01:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2023-11-26 12:01:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4176. [2023-11-26 12:01:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3269 states have (on average 1.3438360354848577) internal successors, (4393), 3318 states have internal predecessors, (4393), 470 states have call successors, (470), 355 states have call predecessors, (470), 435 states have return successors, (651), 516 states have call predecessors, (651), 469 states have call successors, (651) [2023-11-26 12:01:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5514 transitions. [2023-11-26 12:01:49,325 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5514 transitions. Word has length 71 [2023-11-26 12:01:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:49,326 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 5514 transitions. [2023-11-26 12:01:49,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5514 transitions. [2023-11-26 12:01:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:49,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:49,330 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] [2023-11-26 12:01:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:01:49,331 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:49,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1262090532, now seen corresponding path program 1 times [2023-11-26 12:01:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886735988] [2023-11-26 12:01:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:49,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886735988] [2023-11-26 12:01:49,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886735988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701773382] [2023-11-26 12:01:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:49,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:49,476 INFO L87 Difference]: Start difference. First operand 4176 states and 5514 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:51,487 INFO L93 Difference]: Finished difference Result 7084 states and 9993 transitions. [2023-11-26 12:01:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:01:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:51,507 INFO L225 Difference]: With dead ends: 7084 [2023-11-26 12:01:51,507 INFO L226 Difference]: Without dead ends: 5961 [2023-11-26 12:01:51,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:51,513 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 768 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:51,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1008 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:01:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2023-11-26 12:01:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5114. [2023-11-26 12:01:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 4067 states have (on average 1.3766904352102287) internal successors, (5599), 4124 states have internal predecessors, (5599), 554 states have call successors, (554), 403 states have call predecessors, (554), 491 states have return successors, (797), 608 states have call predecessors, (797), 553 states have call successors, (797) [2023-11-26 12:01:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 6950 transitions. [2023-11-26 12:01:52,107 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 6950 transitions. Word has length 71 [2023-11-26 12:01:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:52,108 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 6950 transitions. [2023-11-26 12:01:52,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 6950 transitions. [2023-11-26 12:01:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:52,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:52,114 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] [2023-11-26 12:01:52,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 12:01:52,115 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:52,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2138109538, now seen corresponding path program 1 times [2023-11-26 12:01:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:52,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938294227] [2023-11-26 12:01:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:52,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:52,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938294227] [2023-11-26 12:01:52,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938294227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408879008] [2023-11-26 12:01:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:52,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:52,257 INFO L87 Difference]: Start difference. First operand 5114 states and 6950 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:54,486 INFO L93 Difference]: Finished difference Result 10204 states and 14801 transitions. [2023-11-26 12:01:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 12:01:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-11-26 12:01:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:54,516 INFO L225 Difference]: With dead ends: 10204 [2023-11-26 12:01:54,517 INFO L226 Difference]: Without dead ends: 8143 [2023-11-26 12:01:54,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:01:54,526 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 692 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:01:54,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1012 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:01:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2023-11-26 12:01:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 7045. [2023-11-26 12:01:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 5726 states have (on average 1.4182675515193852) internal successors, (8121), 5799 states have internal predecessors, (8121), 714 states have call successors, (714), 499 states have call predecessors, (714), 603 states have return successors, (1135), 784 states have call predecessors, (1135), 713 states have call successors, (1135) [2023-11-26 12:01:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9970 transitions. [2023-11-26 12:01:55,214 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9970 transitions. Word has length 71 [2023-11-26 12:01:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:55,214 INFO L495 AbstractCegarLoop]: Abstraction has 7045 states and 9970 transitions. [2023-11-26 12:01:55,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-26 12:01:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9970 transitions. [2023-11-26 12:01:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:01:55,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:55,223 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] [2023-11-26 12:01:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 12:01:55,224 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:01:55,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash -618517728, now seen corresponding path program 1 times [2023-11-26 12:01:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527056629] [2023-11-26 12:01:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:01:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 12:01:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 12:01:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 12:01:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:01:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:55,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527056629] [2023-11-26 12:01:55,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527056629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:55,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:55,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:01:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459194642] [2023-11-26 12:01:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:55,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:55,367 INFO L87 Difference]: Start difference. First operand 7045 states and 9970 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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)