./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ --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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:38:41,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:38:41,114 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:38:41,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:38:41,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:38:41,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:38:41,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:38:41,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:38:41,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:38:41,179 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:38:41,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:38:41,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:38:41,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:38:41,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:38:41,183 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:38:41,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:38:41,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:38:41,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:38:41,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:38:41,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:38:41,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:38:41,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:38:41,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:38:41,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:38:41,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:38:41,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:38:41,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:38:41,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:38:41,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:38:41,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:38:41,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:38:41,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:38:41,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:38:41,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:38:41,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:38:41,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:38:41,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:38:41,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:38:41,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:38:41,195 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:38:41,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:38:41,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:38:41,196 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_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2023-11-23 22:38:41,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:38:41,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:38:41,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:38:41,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:38:41,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:38:41,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-23 22:38:44,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:38:44,807 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:38:44,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-23 22:38:44,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/data/cd0490ce3/c960fd77fcb1498aaa9825ee19b69d8f/FLAGd73b97322 [2023-11-23 22:38:44,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/data/cd0490ce3/c960fd77fcb1498aaa9825ee19b69d8f [2023-11-23 22:38:44,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:38:44,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:38:44,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:38:44,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:38:44,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:38:44,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:44" (1/1) ... [2023-11-23 22:38:44,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2294d522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:44, skipping insertion in model container [2023-11-23 22:38:44,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:38:44" (1/1) ... [2023-11-23 22:38:44,958 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:38:45,192 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_de1c343f-db87-42b5-826a-3459bd2dae0c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2023-11-23 22:38:45,318 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_de1c343f-db87-42b5-826a-3459bd2dae0c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2023-11-23 22:38:45,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:38:45,494 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:38:45,508 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_de1c343f-db87-42b5-826a-3459bd2dae0c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[911,924] [2023-11-23 22:38:45,530 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_de1c343f-db87-42b5-826a-3459bd2dae0c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c[8416,8429] [2023-11-23 22:38:45,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:38:45,651 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:38:45,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45 WrapperNode [2023-11-23 22:38:45,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:38:45,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:38:45,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:38:45,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:38:45,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,745 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1048 [2023-11-23 22:38:45,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:38:45,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:38:45,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:38:45,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:38:45,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,766 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,793 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:38:45,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:38:45,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:38:45,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:38:45,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:38:45,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (1/1) ... [2023-11-23 22:38:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:38:45,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:38:45,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:38:45,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:38:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:38:45,932 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-23 22:38:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-23 22:38:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-23 22:38:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-23 22:38:45,933 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-23 22:38:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-23 22:38:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-23 22:38:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-23 22:38:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-23 22:38:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-23 22:38:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-23 22:38:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-23 22:38:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-23 22:38:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-23 22:38:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-23 22:38:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-23 22:38:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-23 22:38:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-23 22:38:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-23 22:38:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-23 22:38:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-23 22:38:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-23 22:38:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:38:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-23 22:38:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-23 22:38:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-23 22:38:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-23 22:38:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:38:45,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:38:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-23 22:38:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-23 22:38:46,092 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:38:46,095 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:38:47,092 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-23 22:38:47,092 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-23 22:38:47,185 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:38:47,253 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:38:47,253 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-23 22:38:47,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:47 BoogieIcfgContainer [2023-11-23 22:38:47,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:38:47,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:38:47,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:38:47,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:38:47,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:38:44" (1/3) ... [2023-11-23 22:38:47,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95b8a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:47, skipping insertion in model container [2023-11-23 22:38:47,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:38:45" (2/3) ... [2023-11-23 22:38:47,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95b8a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:38:47, skipping insertion in model container [2023-11-23 22:38:47,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:38:47" (3/3) ... [2023-11-23 22:38:47,262 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-2.c [2023-11-23 22:38:47,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:38:47,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:38:47,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:38:47,348 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;@d06a29d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:38:47,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:38:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 371 states have (on average 1.7115902964959568) internal successors, (635), 377 states have internal predecessors, (635), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 22:38:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 22:38:47,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:38:47,368 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] [2023-11-23 22:38:47,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:38:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:38:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -704538801, now seen corresponding path program 1 times [2023-11-23 22:38:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:38:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860104321] [2023-11-23 22:38:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:38:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:38:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:38:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:38:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:38:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:38:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 22:38:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 22:38:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:38:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:38:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860104321] [2023-11-23 22:38:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860104321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:38:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:38:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:38:48,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097946003] [2023-11-23 22:38:48,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:38:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:38:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:38:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:38:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:38:48,149 INFO L87 Difference]: Start difference. First operand has 429 states, 371 states have (on average 1.7115902964959568) internal successors, (635), 377 states have internal predecessors, (635), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-23 22:38:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:38:49,847 INFO L93 Difference]: Finished difference Result 972 states and 1613 transitions. [2023-11-23 22:38:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:38:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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 57 [2023-11-23 22:38:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:38:49,869 INFO L225 Difference]: With dead ends: 972 [2023-11-23 22:38:49,870 INFO L226 Difference]: Without dead ends: 562 [2023-11-23 22:38:49,877 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 [2023-11-23 22:38:49,881 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1471 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:38:49,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1455 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 22:38:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-23 22:38:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 525. [2023-11-23 22:38:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 447 states have (on average 1.5838926174496644) internal successors, (708), 453 states have internal predecessors, (708), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-23 22:38:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 819 transitions. [2023-11-23 22:38:49,993 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 819 transitions. Word has length 57 [2023-11-23 22:38:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:38:49,994 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 819 transitions. [2023-11-23 22:38:49,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-23 22:38:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 819 transitions. [2023-11-23 22:38:49,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 22:38:50,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:38:50,000 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] [2023-11-23 22:38:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:38:50,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:38:50,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:38:50,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1646435727, now seen corresponding path program 1 times [2023-11-23 22:38:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:38:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914775189] [2023-11-23 22:38:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:38:50,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:38:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:38:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:38:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:38:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:38:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 22:38:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 22:38:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:38:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:38:50,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914775189] [2023-11-23 22:38:50,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914775189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:38:50,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:38:50,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:38:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143395072] [2023-11-23 22:38:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:38:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:38:50,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:38:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:38:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:38:50,291 INFO L87 Difference]: Start difference. First operand 525 states and 819 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-11-23 22:38:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:38:52,133 INFO L93 Difference]: Finished difference Result 886 states and 1349 transitions. [2023-11-23 22:38:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 22:38:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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 57 [2023-11-23 22:38:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:38:52,142 INFO L225 Difference]: With dead ends: 886 [2023-11-23 22:38:52,143 INFO L226 Difference]: Without dead ends: 698 [2023-11-23 22:38:52,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:38:52,146 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1627 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:38:52,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1704 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 22:38:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-23 22:38:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 626. [2023-11-23 22:38:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 526 states have (on average 1.564638783269962) internal successors, (823), 534 states have internal predecessors, (823), 67 states have call successors, (67), 28 states have call predecessors, (67), 31 states have return successors, (78), 67 states have call predecessors, (78), 65 states have call successors, (78) [2023-11-23 22:38:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 968 transitions. [2023-11-23 22:38:52,211 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 968 transitions. Word has length 57 [2023-11-23 22:38:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:38:52,211 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 968 transitions. [2023-11-23 22:38:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-11-23 22:38:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 968 transitions. [2023-11-23 22:38:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 22:38:52,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:38:52,216 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] [2023-11-23 22:38:52,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:38:52,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:38:52,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:38:52,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1755045231, now seen corresponding path program 1 times [2023-11-23 22:38:52,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:38:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5606542] [2023-11-23 22:38:52,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:38:52,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:38:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:38:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:38:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:38:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:38:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 22:38:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 22:38:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:38:52,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:38:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5606542] [2023-11-23 22:38:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5606542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:38:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:38:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:38:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806794611] [2023-11-23 22:38:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:38:52,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:38:52,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:38:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:38:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:38:52,454 INFO L87 Difference]: Start difference. First operand 626 states and 968 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-23 22:38:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:38:55,150 INFO L93 Difference]: Finished difference Result 2024 states and 3018 transitions. [2023-11-23 22:38:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 22:38:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-11-23 22:38:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:38:55,162 INFO L225 Difference]: With dead ends: 2024 [2023-11-23 22:38:55,163 INFO L226 Difference]: Without dead ends: 1723 [2023-11-23 22:38:55,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 22:38:55,168 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3480 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:38:55,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 2267 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 22:38:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-11-23 22:38:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1590. [2023-11-23 22:38:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1285 states have (on average 1.4614785992217898) internal successors, (1878), 1308 states have internal predecessors, (1878), 177 states have call successors, (177), 111 states have call predecessors, (177), 126 states have return successors, (211), 173 states have call predecessors, (211), 175 states have call successors, (211) [2023-11-23 22:38:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2266 transitions. [2023-11-23 22:38:55,353 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2266 transitions. Word has length 57 [2023-11-23 22:38:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:38:55,353 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2266 transitions. [2023-11-23 22:38:55,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-23 22:38:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2266 transitions. [2023-11-23 22:38:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 22:38:55,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:38:55,359 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] [2023-11-23 22:38:55,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:38:55,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:38:55,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:38:55,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1009743390, now seen corresponding path program 1 times [2023-11-23 22:38:55,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:38:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89735518] [2023-11-23 22:38:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:38:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:38:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:38:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:38:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:38:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 22:38:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 22:38:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:38:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:38:55,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89735518] [2023-11-23 22:38:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89735518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:38:55,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:38:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:38:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108497590] [2023-11-23 22:38:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:38:55,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:38:55,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:38:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:38:55,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:38:55,564 INFO L87 Difference]: Start difference. First operand 1590 states and 2266 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) [2023-11-23 22:38:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:38:57,110 INFO L93 Difference]: Finished difference Result 2987 states and 4214 transitions. [2023-11-23 22:38:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:38:57,110 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 [2023-11-23 22:38:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:38:57,121 INFO L225 Difference]: With dead ends: 2987 [2023-11-23 22:38:57,124 INFO L226 Difference]: Without dead ends: 1728 [2023-11-23 22:38:57,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:38:57,139 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 596 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:38:57,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2364 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:38:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2023-11-23 22:38:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1622. [2023-11-23 22:38:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1309 states have (on average 1.4484339190221542) internal successors, (1896), 1332 states have internal predecessors, (1896), 177 states have call successors, (177), 111 states have call predecessors, (177), 134 states have return successors, (219), 181 states have call predecessors, (219), 175 states have call successors, (219) [2023-11-23 22:38:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2292 transitions. [2023-11-23 22:38:57,271 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2292 transitions. Word has length 58 [2023-11-23 22:38:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:38:57,276 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2292 transitions. [2023-11-23 22:38:57,277 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) [2023-11-23 22:38:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2292 transitions. [2023-11-23 22:38:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 22:38:57,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:38:57,279 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] [2023-11-23 22:38:57,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:38:57,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:38:57,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:38:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1082129948, now seen corresponding path program 1 times [2023-11-23 22:38:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:38:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199894873] [2023-11-23 22:38:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:38:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:38:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:38:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:38:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:38:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:38:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 22:38:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 22:38:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:38:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:38:57,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:38:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199894873] [2023-11-23 22:38:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199894873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:38:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:38:57,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:38:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425555655] [2023-11-23 22:38:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:38:57,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:38:57,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:38:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:38:57,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:38:57,515 INFO L87 Difference]: Start difference. First operand 1622 states and 2292 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 22:39:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:00,110 INFO L93 Difference]: Finished difference Result 4881 states and 6853 transitions. [2023-11-23 22:39:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 22:39:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-23 22:39:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:00,124 INFO L225 Difference]: With dead ends: 4881 [2023-11-23 22:39:00,124 INFO L226 Difference]: Without dead ends: 1992 [2023-11-23 22:39:00,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 22:39:00,134 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 3582 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:00,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 2313 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 22:39:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-23 22:39:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1836. [2023-11-23 22:39:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1451 states have (on average 1.3955892487939352) internal successors, (2025), 1476 states have internal predecessors, (2025), 217 states have call successors, (217), 139 states have call predecessors, (217), 166 states have return successors, (265), 223 states have call predecessors, (265), 215 states have call successors, (265) [2023-11-23 22:39:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2507 transitions. [2023-11-23 22:39:00,290 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2507 transitions. Word has length 58 [2023-11-23 22:39:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:00,291 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 2507 transitions. [2023-11-23 22:39:00,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-23 22:39:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2507 transitions. [2023-11-23 22:39:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 22:39:00,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:00,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:00,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:39:00,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:00,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash -833537195, now seen corresponding path program 1 times [2023-11-23 22:39:00,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:00,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827666231] [2023-11-23 22:39:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:00,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 22:39:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 22:39:00,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:00,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827666231] [2023-11-23 22:39:00,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827666231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:00,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:00,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:39:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462496405] [2023-11-23 22:39:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:39:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:39:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:39:00,544 INFO L87 Difference]: Start difference. First operand 1836 states and 2507 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-23 22:39:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:02,049 INFO L93 Difference]: Finished difference Result 3521 states and 4769 transitions. [2023-11-23 22:39:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:39:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 80 [2023-11-23 22:39:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:02,062 INFO L225 Difference]: With dead ends: 3521 [2023-11-23 22:39:02,062 INFO L226 Difference]: Without dead ends: 2016 [2023-11-23 22:39:02,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:39:02,068 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 876 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:02,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2067 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:39:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2023-11-23 22:39:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1884. [2023-11-23 22:39:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1487 states have (on average 1.3819771351714862) internal successors, (2055), 1512 states have internal predecessors, (2055), 217 states have call successors, (217), 139 states have call predecessors, (217), 178 states have return successors, (277), 235 states have call predecessors, (277), 215 states have call successors, (277) [2023-11-23 22:39:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2549 transitions. [2023-11-23 22:39:02,246 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2549 transitions. Word has length 80 [2023-11-23 22:39:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2549 transitions. [2023-11-23 22:39:02,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-23 22:39:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2549 transitions. [2023-11-23 22:39:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 22:39:02,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:02,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:02,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:39:02,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:02,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1094735507, now seen corresponding path program 1 times [2023-11-23 22:39:02,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:02,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485016543] [2023-11-23 22:39:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:02,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 22:39:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 22:39:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485016543] [2023-11-23 22:39:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485016543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:39:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905361229] [2023-11-23 22:39:02,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:39:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:39:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:39:02,514 INFO L87 Difference]: Start difference. First operand 1884 states and 2549 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-23 22:39:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:04,063 INFO L93 Difference]: Finished difference Result 3283 states and 4385 transitions. [2023-11-23 22:39:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 22:39:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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 80 [2023-11-23 22:39:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:04,085 INFO L225 Difference]: With dead ends: 3283 [2023-11-23 22:39:04,085 INFO L226 Difference]: Without dead ends: 1951 [2023-11-23 22:39:04,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:39:04,091 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1623 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:04,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 1499 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:39:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2023-11-23 22:39:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1676. [2023-11-23 22:39:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1332 states have (on average 1.3888888888888888) internal successors, (1850), 1352 states have internal predecessors, (1850), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2023-11-23 22:39:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2276 transitions. [2023-11-23 22:39:04,278 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2276 transitions. Word has length 80 [2023-11-23 22:39:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:04,278 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2276 transitions. [2023-11-23 22:39:04,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-23 22:39:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2276 transitions. [2023-11-23 22:39:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 22:39:04,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:04,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:04,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:39:04,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:04,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1518382229, now seen corresponding path program 1 times [2023-11-23 22:39:04,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:04,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877817932] [2023-11-23 22:39:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:04,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 22:39:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:39:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877817932] [2023-11-23 22:39:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877817932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:04,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:04,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:39:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078070871] [2023-11-23 22:39:04,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:04,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:04,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:04,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:04,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:04,474 INFO L87 Difference]: Start difference. First operand 1676 states and 2276 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 22:39:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:05,706 INFO L93 Difference]: Finished difference Result 4576 states and 6136 transitions. [2023-11-23 22:39:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:39:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-23 22:39:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:05,730 INFO L225 Difference]: With dead ends: 4576 [2023-11-23 22:39:05,730 INFO L226 Difference]: Without dead ends: 3232 [2023-11-23 22:39:05,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-23 22:39:05,736 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1548 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:05,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1257 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 22:39:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2023-11-23 22:39:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 3022. [2023-11-23 22:39:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2358 states have (on average 1.3379983036471585) internal successors, (3155), 2407 states have internal predecessors, (3155), 350 states have call successors, (350), 233 states have call predecessors, (350), 312 states have return successors, (520), 384 states have call predecessors, (520), 348 states have call successors, (520) [2023-11-23 22:39:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4025 transitions. [2023-11-23 22:39:05,995 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4025 transitions. Word has length 80 [2023-11-23 22:39:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:05,996 INFO L495 AbstractCegarLoop]: Abstraction has 3022 states and 4025 transitions. [2023-11-23 22:39:05,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 22:39:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4025 transitions. [2023-11-23 22:39:05,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 22:39:05,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:05,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:05,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:39:05,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:05,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1595283027, now seen corresponding path program 1 times [2023-11-23 22:39:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204371555] [2023-11-23 22:39:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 22:39:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 22:39:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204371555] [2023-11-23 22:39:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204371555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:06,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:06,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:39:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136787647] [2023-11-23 22:39:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:06,080 INFO L87 Difference]: Start difference. First operand 3022 states and 4025 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 22:39:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:07,126 INFO L93 Difference]: Finished difference Result 4479 states and 5882 transitions. [2023-11-23 22:39:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:39:07,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-23 22:39:07,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:07,138 INFO L225 Difference]: With dead ends: 4479 [2023-11-23 22:39:07,138 INFO L226 Difference]: Without dead ends: 1789 [2023-11-23 22:39:07,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:07,144 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 699 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:07,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1348 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 22:39:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-11-23 22:39:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1676. [2023-11-23 22:39:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1332 states have (on average 1.3611111111111112) internal successors, (1813), 1352 states have internal predecessors, (1813), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2023-11-23 22:39:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2239 transitions. [2023-11-23 22:39:07,287 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2239 transitions. Word has length 80 [2023-11-23 22:39:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:07,287 INFO L495 AbstractCegarLoop]: Abstraction has 1676 states and 2239 transitions. [2023-11-23 22:39:07,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-23 22:39:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2239 transitions. [2023-11-23 22:39:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 22:39:07,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:07,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:07,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:39:07,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:07,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1489177597, now seen corresponding path program 1 times [2023-11-23 22:39:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759286252] [2023-11-23 22:39:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 22:39:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:39:07,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759286252] [2023-11-23 22:39:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759286252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:07,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:07,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:39:07,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070122755] [2023-11-23 22:39:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:07,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:39:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:39:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:39:07,445 INFO L87 Difference]: Start difference. First operand 1676 states and 2239 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 22:39:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:09,448 INFO L93 Difference]: Finished difference Result 3897 states and 5125 transitions. [2023-11-23 22:39:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 22:39:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-11-23 22:39:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:09,466 INFO L225 Difference]: With dead ends: 3897 [2023-11-23 22:39:09,467 INFO L226 Difference]: Without dead ends: 2412 [2023-11-23 22:39:09,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-23 22:39:09,513 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 2285 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:09,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 1826 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 22:39:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2023-11-23 22:39:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2248. [2023-11-23 22:39:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1750 states have (on average 1.3177142857142856) internal successors, (2306), 1778 states have internal predecessors, (2306), 266 states have call successors, (266), 168 states have call predecessors, (266), 230 states have return successors, (368), 303 states have call predecessors, (368), 264 states have call successors, (368) [2023-11-23 22:39:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2940 transitions. [2023-11-23 22:39:09,774 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2940 transitions. Word has length 81 [2023-11-23 22:39:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:09,775 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 2940 transitions. [2023-11-23 22:39:09,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 22:39:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2940 transitions. [2023-11-23 22:39:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 22:39:09,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:09,779 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:39:09,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash -205280706, now seen corresponding path program 1 times [2023-11-23 22:39:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993333226] [2023-11-23 22:39:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:39:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 22:39:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 22:39:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 22:39:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 22:39:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 22:39:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 22:39:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:39:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 22:39:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 22:39:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 22:39:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 22:39:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 22:39:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993333226] [2023-11-23 22:39:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993333226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748590798] [2023-11-23 22:39:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:10,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:10,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:10,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:10,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:39:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:10,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:39:10,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 22:39:10,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748590798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:10,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:10,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-23 22:39:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973706986] [2023-11-23 22:39:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:10,379 INFO L87 Difference]: Start difference. First operand 2248 states and 2940 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 22:39:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:10,758 INFO L93 Difference]: Finished difference Result 5844 states and 7439 transitions. [2023-11-23 22:39:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-23 22:39:10,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:10,784 INFO L225 Difference]: With dead ends: 5844 [2023-11-23 22:39:10,784 INFO L226 Difference]: Without dead ends: 3998 [2023-11-23 22:39:10,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:10,790 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 57 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:10,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1205 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:39:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2023-11-23 22:39:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3958. [2023-11-23 22:39:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3047 states have (on average 1.279947489333771) internal successors, (3900), 3098 states have internal predecessors, (3900), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2023-11-23 22:39:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5009 transitions. [2023-11-23 22:39:11,184 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5009 transitions. Word has length 145 [2023-11-23 22:39:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:11,185 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5009 transitions. [2023-11-23 22:39:11,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 22:39:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5009 transitions. [2023-11-23 22:39:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 22:39:11,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:11,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:11,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:11,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de1c343f-db87-42b5-826a-3459bd2dae0c/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 22:39:11,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:11,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -339032444, now seen corresponding path program 1 times [2023-11-23 22:39:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830267035] [2023-11-23 22:39:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 22:39:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 22:39:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 22:39:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:11,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830267035] [2023-11-23 22:39:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830267035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:11,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:11,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:11,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728121057] [2023-11-23 22:39:11,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:11,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:11,635 INFO L87 Difference]: Start difference. First operand 3958 states and 5009 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:39:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:14,655 INFO L93 Difference]: Finished difference Result 4391 states and 5731 transitions. [2023-11-23 22:39:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:39:14,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-23 22:39:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:14,680 INFO L225 Difference]: With dead ends: 4391 [2023-11-23 22:39:14,681 INFO L226 Difference]: Without dead ends: 4078 [2023-11-23 22:39:14,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:39:14,684 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1006 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 813 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 22:39:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2023-11-23 22:39:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3958. [2023-11-23 22:39:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 3047 states have (on average 1.2796192976698393) internal successors, (3899), 3098 states have internal predecessors, (3899), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2023-11-23 22:39:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5008 transitions. [2023-11-23 22:39:15,402 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5008 transitions. Word has length 151 [2023-11-23 22:39:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:15,403 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5008 transitions. [2023-11-23 22:39:15,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:39:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5008 transitions. [2023-11-23 22:39:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 22:39:15,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:15,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:39:15,414 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:15,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1448837378, now seen corresponding path program 1 times [2023-11-23 22:39:15,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:15,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795733777] [2023-11-23 22:39:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:15,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 22:39:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 22:39:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 22:39:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795733777] [2023-11-23 22:39:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795733777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:15,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:39:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923315230] [2023-11-23 22:39:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:15,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:15,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:15,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:15,704 INFO L87 Difference]: Start difference. First operand 3958 states and 5008 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-23 22:39:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:19,902 INFO L93 Difference]: Finished difference Result 4827 states and 6460 transitions. [2023-11-23 22:39:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:39:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-11-23 22:39:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:19,930 INFO L225 Difference]: With dead ends: 4827 [2023-11-23 22:39:19,930 INFO L226 Difference]: Without dead ends: 4521 [2023-11-23 22:39:19,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:19,934 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1588 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:19,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 1187 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 22:39:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2023-11-23 22:39:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4282. [2023-11-23 22:39:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3344 states have (on average 1.312200956937799) internal successors, (4388), 3396 states have internal predecessors, (4388), 493 states have call successors, (493), 335 states have call predecessors, (493), 443 states have return successors, (659), 552 states have call predecessors, (659), 491 states have call successors, (659) [2023-11-23 22:39:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 5540 transitions. [2023-11-23 22:39:20,661 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 5540 transitions. Word has length 151 [2023-11-23 22:39:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:20,661 INFO L495 AbstractCegarLoop]: Abstraction has 4282 states and 5540 transitions. [2023-11-23 22:39:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-23 22:39:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 5540 transitions. [2023-11-23 22:39:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 22:39:20,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:20,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 22:39:20,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:20,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 903964804, now seen corresponding path program 1 times [2023-11-23 22:39:20,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466654059] [2023-11-23 22:39:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 22:39:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 22:39:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 22:39:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:20,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:20,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466654059] [2023-11-23 22:39:20,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466654059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:20,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:20,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:39:20,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586112939] [2023-11-23 22:39:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:20,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:20,991 INFO L87 Difference]: Start difference. First operand 4282 states and 5540 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-11-23 22:39:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:26,321 INFO L93 Difference]: Finished difference Result 5612 states and 7762 transitions. [2023-11-23 22:39:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:39:26,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2023-11-23 22:39:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:26,341 INFO L225 Difference]: With dead ends: 5612 [2023-11-23 22:39:26,341 INFO L226 Difference]: Without dead ends: 4982 [2023-11-23 22:39:26,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:39:26,346 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1629 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 3831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:26,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2115 Invalid, 3831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 22:39:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2023-11-23 22:39:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4581. [2023-11-23 22:39:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 3616 states have (on average 1.334900442477876) internal successors, (4827), 3669 states have internal predecessors, (4827), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2023-11-23 22:39:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6021 transitions. [2023-11-23 22:39:26,967 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6021 transitions. Word has length 151 [2023-11-23 22:39:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:26,968 INFO L495 AbstractCegarLoop]: Abstraction has 4581 states and 6021 transitions. [2023-11-23 22:39:26,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2023-11-23 22:39:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6021 transitions. [2023-11-23 22:39:26,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 22:39:26,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:26,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:26,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 22:39:26,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:26,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1579124930, now seen corresponding path program 1 times [2023-11-23 22:39:26,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:26,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378824406] [2023-11-23 22:39:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:26,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 22:39:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 22:39:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 22:39:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378824406] [2023-11-23 22:39:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378824406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:27,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:39:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373491165] [2023-11-23 22:39:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:27,301 INFO L87 Difference]: Start difference. First operand 4581 states and 6021 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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)