./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU --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 ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:57:30,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:57:30,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:57:30,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:57:30,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:57:30,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:57:30,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:57:30,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:57:30,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:57:30,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:57:30,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:57:30,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:57:30,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:57:30,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:57:30,282 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:57:30,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:57:30,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:57:30,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:57:30,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:57:30,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:57:30,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:57:30,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:57:30,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:57:30,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:57:30,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:57:30,289 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:57:30,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:57:30,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:57:30,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:57:30,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:57:30,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:57:30,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:57:30,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:30,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:57:30,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:57:30,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:57:30,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:57:30,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:57:30,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:57:30,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:57:30,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:57:30,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:57:30,298 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 [2024-10-31 21:57:30,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:57:30,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:57:30,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:57:30,646 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:57:30,646 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:57:30,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c Unable to find full path for "g++" [2024-10-31 21:57:32,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:57:32,940 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:57:32,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2024-10-31 21:57:32,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/data/35ad6d377/393a5a957e414aa0b597256430d5cbc2/FLAG395f409e7 [2024-10-31 21:57:32,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/data/35ad6d377/393a5a957e414aa0b597256430d5cbc2 [2024-10-31 21:57:32,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:57:32,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:57:32,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:32,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:57:32,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:57:32,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:32" (1/1) ... [2024-10-31 21:57:32,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344764c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:32, skipping insertion in model container [2024-10-31 21:57:32,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:57:32" (1/1) ... [2024-10-31 21:57:33,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:57:33,229 WARN L251 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2024-10-31 21:57:33,300 WARN L251 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2024-10-31 21:57:33,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:33,510 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:57:33,526 WARN L251 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2024-10-31 21:57:33,554 WARN L251 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_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2024-10-31 21:57:33,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:57:33,635 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:57:33,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33 WrapperNode [2024-10-31 21:57:33,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:57:33,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:33,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:57:33,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:57:33,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,719 INFO L138 Inliner]: procedures = 75, calls = 91, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 1014 [2024-10-31 21:57:33,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:57:33,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:57:33,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:57:33,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:57:33,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,769 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:57:33,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:57:33,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:57:33,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:57:33,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:57:33,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (1/1) ... [2024-10-31 21:57:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:57:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:57:33,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:57:33,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df1178c-a91f-4c1d-a208-74eccfc9cfd8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:57:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:57:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 21:57:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 21:57:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-31 21:57:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-31 21:57:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-31 21:57:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-31 21:57:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-31 21:57:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-31 21:57:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-31 21:57:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-31 21:57:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-31 21:57:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-31 21:57:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-31 21:57:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-31 21:57:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-31 21:57:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-31 21:57:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-31 21:57:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-31 21:57:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-31 21:57:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-31 21:57:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-31 21:57:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-31 21:57:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:57:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-31 21:57:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-31 21:57:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-31 21:57:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-31 21:57:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:57:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:57:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-31 21:57:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-31 21:57:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-31 21:57:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-31 21:57:34,161 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:57:34,166 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:57:35,490 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2024-10-31 21:57:35,490 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:57:35,517 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:57:35,522 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-10-31 21:57:35,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:35 BoogieIcfgContainer [2024-10-31 21:57:35,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:57:35,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:57:35,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:57:35,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:57:35,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:57:32" (1/3) ... [2024-10-31 21:57:35,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e6aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:35, skipping insertion in model container [2024-10-31 21:57:35,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:57:33" (2/3) ... [2024-10-31 21:57:35,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2e6aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:57:35, skipping insertion in model container [2024-10-31 21:57:35,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:57:35" (3/3) ... [2024-10-31 21:57:35,537 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2024-10-31 21:57:35,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:57:35,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:57:35,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:57:35,676 INFO L333 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, 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;@74a33d0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:57:35,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 21:57:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 419 states have (on average 1.6229116945107398) internal successors, (680), 427 states have internal predecessors, (680), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-31 21:57:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:35,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:35,707 INFO L215 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] [2024-10-31 21:57:35,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:35,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash 754891210, now seen corresponding path program 1 times [2024-10-31 21:57:35,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:35,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625296818] [2024-10-31 21:57:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625296818] [2024-10-31 21:57:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625296818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875027682] [2024-10-31 21:57:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:36,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:36,476 INFO L87 Difference]: Start difference. First operand has 478 states, 419 states have (on average 1.6229116945107398) internal successors, (680), 427 states have internal predecessors, (680), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:38,943 INFO L93 Difference]: Finished difference Result 1063 states and 1684 transitions. [2024-10-31 21:57:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:57:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2024-10-31 21:57:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:38,984 INFO L225 Difference]: With dead ends: 1063 [2024-10-31 21:57:38,984 INFO L226 Difference]: Without dead ends: 602 [2024-10-31 21:57:38,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:57:39,005 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 822 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:39,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2548 Invalid, 1528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-31 21:57:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-10-31 21:57:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 563. [2024-10-31 21:57:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 487 states have (on average 1.513347022587269) internal successors, (737), 494 states have internal predecessors, (737), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2024-10-31 21:57:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 842 transitions. [2024-10-31 21:57:39,190 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 842 transitions. Word has length 65 [2024-10-31 21:57:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:39,191 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 842 transitions. [2024-10-31 21:57:39,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 842 transitions. [2024-10-31 21:57:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:39,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:39,201 INFO L215 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] [2024-10-31 21:57:39,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:57:39,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:39,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2001736056, now seen corresponding path program 1 times [2024-10-31 21:57:39,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188022138] [2024-10-31 21:57:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:39,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:39,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188022138] [2024-10-31 21:57:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188022138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572637961] [2024-10-31 21:57:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:39,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:39,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:39,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:39,498 INFO L87 Difference]: Start difference. First operand 563 states and 842 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-10-31 21:57:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:41,437 INFO L93 Difference]: Finished difference Result 910 states and 1319 transitions. [2024-10-31 21:57:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:57:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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 65 [2024-10-31 21:57:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:41,449 INFO L225 Difference]: With dead ends: 910 [2024-10-31 21:57:41,450 INFO L226 Difference]: Without dead ends: 733 [2024-10-31 21:57:41,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-31 21:57:41,454 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 1369 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:41,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 2362 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 21:57:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-10-31 21:57:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 659. [2024-10-31 21:57:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 563 states have (on average 1.4937833037300177) internal successors, (841), 572 states have internal predecessors, (841), 63 states have call successors, (63), 29 states have call predecessors, (63), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2024-10-31 21:57:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 976 transitions. [2024-10-31 21:57:41,551 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 976 transitions. Word has length 65 [2024-10-31 21:57:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:41,551 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 976 transitions. [2024-10-31 21:57:41,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-10-31 21:57:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 976 transitions. [2024-10-31 21:57:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:41,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:41,557 INFO L215 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] [2024-10-31 21:57:41,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:57:41,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:41,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash 264645130, now seen corresponding path program 1 times [2024-10-31 21:57:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565100784] [2024-10-31 21:57:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:41,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565100784] [2024-10-31 21:57:41,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565100784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:41,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:57:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049541672] [2024-10-31 21:57:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:41,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:57:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:57:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:41,880 INFO L87 Difference]: Start difference. First operand 659 states and 976 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:43,559 INFO L93 Difference]: Finished difference Result 958 states and 1387 transitions. [2024-10-31 21:57:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:57:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2024-10-31 21:57:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:43,564 INFO L225 Difference]: With dead ends: 958 [2024-10-31 21:57:43,565 INFO L226 Difference]: Without dead ends: 691 [2024-10-31 21:57:43,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:57:43,567 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 909 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:43,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2538 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 21:57:43,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-10-31 21:57:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 664. [2024-10-31 21:57:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 567 states have (on average 1.4867724867724867) internal successors, (843), 576 states have internal predecessors, (843), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (73), 62 states have call predecessors, (73), 59 states have call successors, (73) [2024-10-31 21:57:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 979 transitions. [2024-10-31 21:57:43,642 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 979 transitions. Word has length 65 [2024-10-31 21:57:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:43,642 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 979 transitions. [2024-10-31 21:57:43,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 979 transitions. [2024-10-31 21:57:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:43,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:43,646 INFO L215 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] [2024-10-31 21:57:43,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:57:43,646 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:43,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash -764714168, now seen corresponding path program 1 times [2024-10-31 21:57:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056819843] [2024-10-31 21:57:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:43,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056819843] [2024-10-31 21:57:43,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056819843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:43,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:43,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:57:43,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871068366] [2024-10-31 21:57:43,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:43,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:57:43,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:57:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:43,878 INFO L87 Difference]: Start difference. First operand 664 states and 979 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 21:57:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:47,198 INFO L93 Difference]: Finished difference Result 2326 states and 3251 transitions. [2024-10-31 21:57:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-31 21:57:47,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-10-31 21:57:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:47,216 INFO L225 Difference]: With dead ends: 2326 [2024-10-31 21:57:47,217 INFO L226 Difference]: Without dead ends: 2054 [2024-10-31 21:57:47,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 21:57:47,226 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 2599 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:47,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 2565 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-31 21:57:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2024-10-31 21:57:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1804. [2024-10-31 21:57:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1467 states have (on average 1.3796864349011588) internal successors, (2024), 1496 states have internal predecessors, (2024), 180 states have call successors, (180), 131 states have call predecessors, (180), 155 states have return successors, (259), 180 states have call predecessors, (259), 176 states have call successors, (259) [2024-10-31 21:57:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2463 transitions. [2024-10-31 21:57:47,465 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2463 transitions. Word has length 65 [2024-10-31 21:57:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:47,466 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2463 transitions. [2024-10-31 21:57:47,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 21:57:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2463 transitions. [2024-10-31 21:57:47,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:47,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:47,468 INFO L215 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] [2024-10-31 21:57:47,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:57:47,469 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:47,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 286734921, now seen corresponding path program 1 times [2024-10-31 21:57:47,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846487842] [2024-10-31 21:57:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:47,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846487842] [2024-10-31 21:57:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846487842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:57:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857723320] [2024-10-31 21:57:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:57:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:57:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:57:47,698 INFO L87 Difference]: Start difference. First operand 1804 states and 2463 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:49,677 INFO L93 Difference]: Finished difference Result 3401 states and 4582 transitions. [2024-10-31 21:57:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:57:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2024-10-31 21:57:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:49,691 INFO L225 Difference]: With dead ends: 3401 [2024-10-31 21:57:49,691 INFO L226 Difference]: Without dead ends: 1989 [2024-10-31 21:57:49,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:57:49,698 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 611 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:49,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2865 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 21:57:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-10-31 21:57:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1849. [2024-10-31 21:57:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1503 states have (on average 1.364604125083167) internal successors, (2051), 1532 states have internal predecessors, (2051), 180 states have call successors, (180), 131 states have call predecessors, (180), 164 states have return successors, (271), 189 states have call predecessors, (271), 176 states have call successors, (271) [2024-10-31 21:57:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2502 transitions. [2024-10-31 21:57:49,907 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2502 transitions. Word has length 65 [2024-10-31 21:57:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:49,908 INFO L471 AbstractCegarLoop]: Abstraction has 1849 states and 2502 transitions. [2024-10-31 21:57:49,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-31 21:57:49,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2502 transitions. [2024-10-31 21:57:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:49,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:49,909 INFO L215 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] [2024-10-31 21:57:49,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:57:49,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:49,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1672938315, now seen corresponding path program 1 times [2024-10-31 21:57:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434110088] [2024-10-31 21:57:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:50,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434110088] [2024-10-31 21:57:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434110088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:50,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:50,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690563207] [2024-10-31 21:57:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:50,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:50,164 INFO L87 Difference]: Start difference. First operand 1849 states and 2502 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-10-31 21:57:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:52,264 INFO L93 Difference]: Finished difference Result 3284 states and 4341 transitions. [2024-10-31 21:57:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:57:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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 65 [2024-10-31 21:57:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:52,279 INFO L225 Difference]: With dead ends: 3284 [2024-10-31 21:57:52,279 INFO L226 Difference]: Without dead ends: 2047 [2024-10-31 21:57:52,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-31 21:57:52,284 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 1392 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:52,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2086 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 21:57:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2024-10-31 21:57:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1827. [2024-10-31 21:57:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1489 states have (on average 1.3613163196776359) internal successors, (2027), 1512 states have internal predecessors, (2027), 180 states have call successors, (180), 131 states have call predecessors, (180), 156 states have return successors, (255), 187 states have call predecessors, (255), 176 states have call successors, (255) [2024-10-31 21:57:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2462 transitions. [2024-10-31 21:57:52,506 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2462 transitions. Word has length 65 [2024-10-31 21:57:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:52,508 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2462 transitions. [2024-10-31 21:57:52,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-10-31 21:57:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2462 transitions. [2024-10-31 21:57:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 21:57:52,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:52,512 INFO L215 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] [2024-10-31 21:57:52,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:57:52,513 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:52,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1538924809, now seen corresponding path program 1 times [2024-10-31 21:57:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485030040] [2024-10-31 21:57:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485030040] [2024-10-31 21:57:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485030040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:52,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:52,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:57:52,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550285670] [2024-10-31 21:57:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:52,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:57:52,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:57:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:57:52,665 INFO L87 Difference]: Start difference. First operand 1827 states and 2462 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 21:57:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:54,162 INFO L93 Difference]: Finished difference Result 4902 states and 6441 transitions. [2024-10-31 21:57:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:57:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-10-31 21:57:54,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:54,189 INFO L225 Difference]: With dead ends: 4902 [2024-10-31 21:57:54,189 INFO L226 Difference]: Without dead ends: 3470 [2024-10-31 21:57:54,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:57:54,198 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 1693 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:54,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1725 Valid, 1413 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 21:57:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2024-10-31 21:57:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3198. [2024-10-31 21:57:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2555 states have (on average 1.3088062622309198) internal successors, (3344), 2599 states have internal predecessors, (3344), 332 states have call successors, (332), 254 states have call predecessors, (332), 309 states have return successors, (527), 351 states have call predecessors, (527), 328 states have call successors, (527) [2024-10-31 21:57:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4203 transitions. [2024-10-31 21:57:54,553 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4203 transitions. Word has length 65 [2024-10-31 21:57:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:54,554 INFO L471 AbstractCegarLoop]: Abstraction has 3198 states and 4203 transitions. [2024-10-31 21:57:54,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 21:57:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4203 transitions. [2024-10-31 21:57:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-31 21:57:54,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:54,556 INFO L215 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] [2024-10-31 21:57:54,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:57:54,557 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:54,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1144595020, now seen corresponding path program 1 times [2024-10-31 21:57:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:54,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405224633] [2024-10-31 21:57:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:54,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405224633] [2024-10-31 21:57:54,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405224633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:54,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:54,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:57:54,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629484864] [2024-10-31 21:57:54,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:54,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:57:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:57:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:57:54,675 INFO L87 Difference]: Start difference. First operand 3198 states and 4203 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 21:57:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:56,318 INFO L93 Difference]: Finished difference Result 8216 states and 10717 transitions. [2024-10-31 21:57:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:57:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-10-31 21:57:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:56,345 INFO L225 Difference]: With dead ends: 8216 [2024-10-31 21:57:56,345 INFO L226 Difference]: Without dead ends: 5392 [2024-10-31 21:57:56,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:57:56,353 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 1126 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:56,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1425 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 21:57:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2024-10-31 21:57:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 4876. [2024-10-31 21:57:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 3840 states have (on average 1.2875) internal successors, (4944), 3891 states have internal predecessors, (4944), 526 states have call successors, (526), 428 states have call predecessors, (526), 508 states have return successors, (848), 563 states have call predecessors, (848), 522 states have call successors, (848) [2024-10-31 21:57:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 6318 transitions. [2024-10-31 21:57:56,864 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 6318 transitions. Word has length 66 [2024-10-31 21:57:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:56,865 INFO L471 AbstractCegarLoop]: Abstraction has 4876 states and 6318 transitions. [2024-10-31 21:57:56,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 21:57:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 6318 transitions. [2024-10-31 21:57:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 21:57:56,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:56,869 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:56,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:57:56,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:56,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 196552871, now seen corresponding path program 1 times [2024-10-31 21:57:56,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:56,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49934999] [2024-10-31 21:57:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:57:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:57:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 21:57:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 21:57:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:56,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:57:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:57:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:57:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:57:57,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:57,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49934999] [2024-10-31 21:57:57,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49934999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:57,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:57:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191288601] [2024-10-31 21:57:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:57,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:57:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:57:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:57:57,016 INFO L87 Difference]: Start difference. First operand 4876 states and 6318 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-31 21:57:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:58,936 INFO L93 Difference]: Finished difference Result 6506 states and 8320 transitions. [2024-10-31 21:57:58,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 21:57:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-10-31 21:57:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:58,975 INFO L225 Difference]: With dead ends: 6506 [2024-10-31 21:57:58,976 INFO L226 Difference]: Without dead ends: 6503 [2024-10-31 21:57:58,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:57:58,980 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 2032 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:58,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 1448 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 21:57:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2024-10-31 21:57:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 5930. [2024-10-31 21:57:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 4643 states have (on average 1.2737454232177472) internal successors, (5914), 4703 states have internal predecessors, (5914), 652 states have call successors, (652), 542 states have call predecessors, (652), 633 states have return successors, (1041), 691 states have call predecessors, (1041), 649 states have call successors, (1041) [2024-10-31 21:57:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 7607 transitions. [2024-10-31 21:57:59,788 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 7607 transitions. Word has length 73 [2024-10-31 21:57:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:59,790 INFO L471 AbstractCegarLoop]: Abstraction has 5930 states and 7607 transitions. [2024-10-31 21:57:59,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-31 21:57:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 7607 transitions. [2024-10-31 21:57:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-31 21:57:59,794 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:59,794 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:59,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:57:59,794 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:59,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1796772021, now seen corresponding path program 1 times [2024-10-31 21:57:59,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:59,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466137014] [2024-10-31 21:57:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:59,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat