./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:52,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:53,063 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:47:53,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:53,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:53,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:53,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:53,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:53,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:53,114 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:53,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:53,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:53,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:53,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:53,117 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:53,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:53,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:53,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:53,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:53,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:53,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:53,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:53,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:53,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:53,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:53,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:53,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:53,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:53,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:53,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:53,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:53,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:53,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:53,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:53,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:53,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:53,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:53,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:53,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:53,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:53,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:53,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:53,129 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_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 [2023-11-26 11:47:53,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:53,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:53,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:53,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:53,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:53,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-26 11:47:56,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:56,913 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:56,924 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-26 11:47:56,951 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/data/8fde2d163/3855bcb18e6a419cba342a231bdbb117/FLAG9124d2dc0 [2023-11-26 11:47:56,964 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/data/8fde2d163/3855bcb18e6a419cba342a231bdbb117 [2023-11-26 11:47:56,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:56,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:56,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:56,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:56,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:56,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:56" (1/1) ... [2023-11-26 11:47:56,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6891262b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:56, skipping insertion in model container [2023-11-26 11:47:56,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:56" (1/1) ... [2023-11-26 11:47:57,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:57,203 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2023-11-26 11:47:57,291 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2023-11-26 11:47:57,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:57,422 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:57,438 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2023-11-26 11:47:57,466 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2023-11-26 11:47:57,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:57,584 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:57,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57 WrapperNode [2023-11-26 11:47:57,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:57,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:57,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:57,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:57,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,706 INFO L138 Inliner]: procedures = 71, calls = 86, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 874 [2023-11-26 11:47:57,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:57,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:57,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:57,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:57,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,751 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:47:57,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:57,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:57,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:57,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:57,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (1/1) ... [2023-11-26 11:47:57,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:57,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:57,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:57,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea09b08c-8695-431e-afa3-46a8e47ffcf0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-26 11:47:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-26 11:47:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-26 11:47:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-26 11:47:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-26 11:47:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-26 11:47:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-26 11:47:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-26 11:47:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-26 11:47:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-26 11:47:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-26 11:47:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-26 11:47:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-26 11:47:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-26 11:47:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-26 11:47:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-26 11:47:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-26 11:47:57,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-26 11:47:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-26 11:47:57,875 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-26 11:47:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-26 11:47:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-26 11:47:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-26 11:47:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-26 11:47:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-26 11:47:57,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-26 11:47:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:57,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-26 11:47:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-26 11:47:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-26 11:47:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-26 11:47:58,025 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:58,029 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:58,854 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-26 11:47:58,855 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-26 11:47:58,930 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:59,036 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:59,036 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-26 11:47:59,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:59 BoogieIcfgContainer [2023-11-26 11:47:59,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:59,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:59,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:59,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:59,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:56" (1/3) ... [2023-11-26 11:47:59,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceae063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:59, skipping insertion in model container [2023-11-26 11:47:59,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:57" (2/3) ... [2023-11-26 11:47:59,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceae063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:59, skipping insertion in model container [2023-11-26 11:47:59,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:59" (3/3) ... [2023-11-26 11:47:59,048 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-26 11:47:59,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:59,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:47:59,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:59,145 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46b36e11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:59,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:47:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 368 states, 310 states have (on average 1.7032258064516128) internal successors, (528), 318 states have internal predecessors, (528), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:47:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:47:59,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:59,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:59,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:59,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1701733886, now seen corresponding path program 1 times [2023-11-26 11:47:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944518422] [2023-11-26 11:47:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:59,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:47:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:47:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:47:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:47:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:47:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:47:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:47:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:59,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:59,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944518422] [2023-11-26 11:47:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944518422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:59,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:59,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:47:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298883799] [2023-11-26 11:47:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:47:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:47:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:47:59,902 INFO L87 Difference]: Start difference. First operand has 368 states, 310 states have (on average 1.7032258064516128) internal successors, (528), 318 states have internal predecessors, (528), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:01,728 INFO L93 Difference]: Finished difference Result 852 states and 1401 transitions. [2023-11-26 11:48:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:48:01,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-11-26 11:48:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:01,765 INFO L225 Difference]: With dead ends: 852 [2023-11-26 11:48:01,766 INFO L226 Difference]: Without dead ends: 500 [2023-11-26 11:48:01,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:48:01,783 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 709 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:01,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1486 Invalid, 1433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:48:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-26 11:48:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 463. [2023-11-26 11:48:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 386 states have (on average 1.572538860103627) internal successors, (607), 393 states have internal predecessors, (607), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-26 11:48:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2023-11-26 11:48:01,901 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 57 [2023-11-26 11:48:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:01,902 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2023-11-26 11:48:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2023-11-26 11:48:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:48:01,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:01,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:01,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:01,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash -242258882, now seen corresponding path program 1 times [2023-11-26 11:48:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:01,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861166796] [2023-11-26 11:48:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:01,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:48:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:48:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:48:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:02,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861166796] [2023-11-26 11:48:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861166796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:48:02,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588818085] [2023-11-26 11:48:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:02,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:02,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:02,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:02,185 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:03,919 INFO L93 Difference]: Finished difference Result 824 states and 1244 transitions. [2023-11-26 11:48:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:48:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-11-26 11:48:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:03,935 INFO L225 Difference]: With dead ends: 824 [2023-11-26 11:48:03,935 INFO L226 Difference]: Without dead ends: 636 [2023-11-26 11:48:03,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:48:03,943 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1100 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:03,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1784 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:48:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-26 11:48:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 564. [2023-11-26 11:48:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 465 states have (on average 1.5526881720430108) internal successors, (722), 474 states have internal predecessors, (722), 66 states have call successors, (66), 29 states have call predecessors, (66), 31 states have return successors, (75), 64 states have call predecessors, (75), 62 states have call successors, (75) [2023-11-26 11:48:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 863 transitions. [2023-11-26 11:48:04,067 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 863 transitions. Word has length 57 [2023-11-26 11:48:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:04,067 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 863 transitions. [2023-11-26 11:48:04,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 863 transitions. [2023-11-26 11:48:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:48:04,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:04,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:04,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:04,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:04,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash 651227456, now seen corresponding path program 1 times [2023-11-26 11:48:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979011606] [2023-11-26 11:48:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:48:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:48:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:48:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:04,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:04,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979011606] [2023-11-26 11:48:04,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979011606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:04,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:04,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:48:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033160336] [2023-11-26 11:48:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:04,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:04,367 INFO L87 Difference]: Start difference. First operand 564 states and 863 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-26 11:48:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:06,808 INFO L93 Difference]: Finished difference Result 1962 states and 2913 transitions. [2023-11-26 11:48:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:48:06,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-11-26 11:48:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:06,824 INFO L225 Difference]: With dead ends: 1962 [2023-11-26 11:48:06,825 INFO L226 Difference]: Without dead ends: 1661 [2023-11-26 11:48:06,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:48:06,834 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 3366 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:06,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3384 Valid, 1733 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 11:48:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-11-26 11:48:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1528. [2023-11-26 11:48:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1224 states have (on average 1.451797385620915) internal successors, (1777), 1248 states have internal predecessors, (1777), 176 states have call successors, (176), 112 states have call predecessors, (176), 126 states have return successors, (208), 170 states have call predecessors, (208), 172 states have call successors, (208) [2023-11-26 11:48:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2161 transitions. [2023-11-26 11:48:07,013 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2161 transitions. Word has length 57 [2023-11-26 11:48:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:07,014 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2161 transitions. [2023-11-26 11:48:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-26 11:48:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2161 transitions. [2023-11-26 11:48:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:48:07,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:07,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:07,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash -941419799, now seen corresponding path program 1 times [2023-11-26 11:48:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:07,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718371789] [2023-11-26 11:48:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:48:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:07,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:07,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718371789] [2023-11-26 11:48:07,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718371789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:07,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:07,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:48:07,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432226004] [2023-11-26 11:48:07,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:07,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:48:07,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:48:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:07,298 INFO L87 Difference]: Start difference. First operand 1528 states and 2161 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:48:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:08,786 INFO L93 Difference]: Finished difference Result 2925 states and 4109 transitions. [2023-11-26 11:48:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:48:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-11-26 11:48:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:08,803 INFO L225 Difference]: With dead ends: 2925 [2023-11-26 11:48:08,803 INFO L226 Difference]: Without dead ends: 1666 [2023-11-26 11:48:08,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:48:08,817 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 484 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:08,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 2044 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:48:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-26 11:48:08,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1560. [2023-11-26 11:48:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1248 states have (on average 1.4383012820512822) internal successors, (1795), 1272 states have internal predecessors, (1795), 176 states have call successors, (176), 112 states have call predecessors, (176), 134 states have return successors, (216), 178 states have call predecessors, (216), 172 states have call successors, (216) [2023-11-26 11:48:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2187 transitions. [2023-11-26 11:48:08,960 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2187 transitions. Word has length 58 [2023-11-26 11:48:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:08,961 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2187 transitions. [2023-11-26 11:48:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:48:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2187 transitions. [2023-11-26 11:48:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:48:08,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:08,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:48:08,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:08,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1013806357, now seen corresponding path program 1 times [2023-11-26 11:48:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:08,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830837536] [2023-11-26 11:48:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:08,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:48:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:48:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:09,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830837536] [2023-11-26 11:48:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830837536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:48:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401576645] [2023-11-26 11:48:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:09,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:48:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:48:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:09,122 INFO L87 Difference]: Start difference. First operand 1560 states and 2187 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:48:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:11,676 INFO L93 Difference]: Finished difference Result 4819 states and 6748 transitions. [2023-11-26 11:48:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 11:48:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-26 11:48:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:11,690 INFO L225 Difference]: With dead ends: 4819 [2023-11-26 11:48:11,690 INFO L226 Difference]: Without dead ends: 1930 [2023-11-26 11:48:11,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:48:11,699 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 3077 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:11,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3095 Valid, 2097 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:48:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2023-11-26 11:48:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1774. [2023-11-26 11:48:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1390 states have (on average 1.3841726618705037) internal successors, (1924), 1416 states have internal predecessors, (1924), 216 states have call successors, (216), 140 states have call predecessors, (216), 166 states have return successors, (262), 220 states have call predecessors, (262), 212 states have call successors, (262) [2023-11-26 11:48:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2402 transitions. [2023-11-26 11:48:11,906 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2402 transitions. Word has length 58 [2023-11-26 11:48:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:11,907 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2402 transitions. [2023-11-26 11:48:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:48:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2402 transitions. [2023-11-26 11:48:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:48:11,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:11,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:11,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:11,910 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:11,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1847383777, now seen corresponding path program 1 times [2023-11-26 11:48:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:11,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933723578] [2023-11-26 11:48:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:48:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:48:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:48:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933723578] [2023-11-26 11:48:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933723578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:48:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583052474] [2023-11-26 11:48:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:12,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:48:12,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:48:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:12,117 INFO L87 Difference]: Start difference. First operand 1774 states and 2402 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:48:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:13,574 INFO L93 Difference]: Finished difference Result 3459 states and 4664 transitions. [2023-11-26 11:48:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:48:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-11-26 11:48:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:13,588 INFO L225 Difference]: With dead ends: 3459 [2023-11-26 11:48:13,588 INFO L226 Difference]: Without dead ends: 1954 [2023-11-26 11:48:13,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:48:13,595 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 714 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:13,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1785 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:48:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-26 11:48:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1822. [2023-11-26 11:48:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1426 states have (on average 1.370266479663394) internal successors, (1954), 1452 states have internal predecessors, (1954), 216 states have call successors, (216), 140 states have call predecessors, (216), 178 states have return successors, (274), 232 states have call predecessors, (274), 212 states have call successors, (274) [2023-11-26 11:48:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2444 transitions. [2023-11-26 11:48:13,750 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2444 transitions. Word has length 80 [2023-11-26 11:48:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:13,751 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 2444 transitions. [2023-11-26 11:48:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 11:48:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2444 transitions. [2023-11-26 11:48:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:48:13,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:13,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:13,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:13,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:13,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash -519310817, now seen corresponding path program 1 times [2023-11-26 11:48:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461301933] [2023-11-26 11:48:13,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:13,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:48:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:48:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:48:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461301933] [2023-11-26 11:48:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461301933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:14,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:14,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:48:14,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352838666] [2023-11-26 11:48:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:14,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:14,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:14,028 INFO L87 Difference]: Start difference. First operand 1822 states and 2444 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:15,649 INFO L93 Difference]: Finished difference Result 3221 states and 4280 transitions. [2023-11-26 11:48:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:48:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 11:48:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:15,664 INFO L225 Difference]: With dead ends: 3221 [2023-11-26 11:48:15,664 INFO L226 Difference]: Without dead ends: 1889 [2023-11-26 11:48:15,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:48:15,670 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1098 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:15,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1544 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:48:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-26 11:48:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1614. [2023-11-26 11:48:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1271 states have (on average 1.3760818253343823) internal successors, (1749), 1292 states have internal predecessors, (1749), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2023-11-26 11:48:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2171 transitions. [2023-11-26 11:48:15,829 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2171 transitions. Word has length 80 [2023-11-26 11:48:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:15,829 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2171 transitions. [2023-11-26 11:48:15,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2171 transitions. [2023-11-26 11:48:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:48:15,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:15,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:15,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:15,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:15,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -95664095, now seen corresponding path program 1 times [2023-11-26 11:48:15,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:15,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924946386] [2023-11-26 11:48:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:48:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:48:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:15,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924946386] [2023-11-26 11:48:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924946386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:15,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041315783] [2023-11-26 11:48:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:15,979 INFO L87 Difference]: Start difference. First operand 1614 states and 2171 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:48:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:17,103 INFO L93 Difference]: Finished difference Result 4514 states and 6031 transitions. [2023-11-26 11:48:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:48:17,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-26 11:48:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:17,126 INFO L225 Difference]: With dead ends: 4514 [2023-11-26 11:48:17,126 INFO L226 Difference]: Without dead ends: 3170 [2023-11-26 11:48:17,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:17,133 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1287 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:17,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1026 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:48:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2023-11-26 11:48:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2960. [2023-11-26 11:48:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2297 states have (on average 1.3295602960383108) internal successors, (3054), 2347 states have internal predecessors, (3054), 349 states have call successors, (349), 234 states have call predecessors, (349), 312 states have return successors, (517), 381 states have call predecessors, (517), 345 states have call successors, (517) [2023-11-26 11:48:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3920 transitions. [2023-11-26 11:48:17,419 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3920 transitions. Word has length 80 [2023-11-26 11:48:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:17,420 INFO L495 AbstractCegarLoop]: Abstraction has 2960 states and 3920 transitions. [2023-11-26 11:48:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:48:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3920 transitions. [2023-11-26 11:48:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:48:17,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:17,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:17,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:48:17,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:17,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash -18763297, now seen corresponding path program 1 times [2023-11-26 11:48:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626307296] [2023-11-26 11:48:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:48:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:48:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:48:17,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626307296] [2023-11-26 11:48:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626307296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:17,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:48:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745102511] [2023-11-26 11:48:17,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:17,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:17,524 INFO L87 Difference]: Start difference. First operand 2960 states and 3920 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:18,408 INFO L93 Difference]: Finished difference Result 4417 states and 5777 transitions. [2023-11-26 11:48:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:48:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-26 11:48:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:18,421 INFO L225 Difference]: With dead ends: 4417 [2023-11-26 11:48:18,421 INFO L226 Difference]: Without dead ends: 1727 [2023-11-26 11:48:18,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:48:18,431 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 587 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:18,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1148 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:48:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-11-26 11:48:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1614. [2023-11-26 11:48:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1271 states have (on average 1.3469708890637293) internal successors, (1712), 1292 states have internal predecessors, (1712), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2023-11-26 11:48:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2134 transitions. [2023-11-26 11:48:18,590 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2134 transitions. Word has length 80 [2023-11-26 11:48:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:18,591 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2134 transitions. [2023-11-26 11:48:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:48:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2134 transitions. [2023-11-26 11:48:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-26 11:48:18,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:18,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:48:18,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:18,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1639917928, now seen corresponding path program 1 times [2023-11-26 11:48:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:18,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072134024] [2023-11-26 11:48:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:48:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:48:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:48:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:48:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072134024] [2023-11-26 11:48:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072134024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:48:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481887124] [2023-11-26 11:48:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:48:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:48:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:48:18,766 INFO L87 Difference]: Start difference. First operand 1614 states and 2134 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:48:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:20,705 INFO L93 Difference]: Finished difference Result 3835 states and 5020 transitions. [2023-11-26 11:48:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 11:48:20,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-11-26 11:48:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:20,722 INFO L225 Difference]: With dead ends: 3835 [2023-11-26 11:48:20,723 INFO L226 Difference]: Without dead ends: 2350 [2023-11-26 11:48:20,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:48:20,729 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2012 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:20,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 1590 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:48:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2023-11-26 11:48:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2186. [2023-11-26 11:48:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1689 states have (on average 1.3055062166962699) internal successors, (2205), 1718 states have internal predecessors, (2205), 265 states have call successors, (265), 169 states have call predecessors, (265), 230 states have return successors, (365), 300 states have call predecessors, (365), 261 states have call successors, (365) [2023-11-26 11:48:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2835 transitions. [2023-11-26 11:48:21,014 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2835 transitions. Word has length 81 [2023-11-26 11:48:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:21,015 INFO L495 AbstractCegarLoop]: Abstraction has 2186 states and 2835 transitions. [2023-11-26 11:48:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:48:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2835 transitions. [2023-11-26 11:48:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:48:21,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:21,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:21,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:48:21,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:21,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1167941009, now seen corresponding path program 1 times [2023-11-26 11:48:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968378195] [2023-11-26 11:48:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:48:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:48:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:21,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:21,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968378195] [2023-11-26 11:48:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968378195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:21,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:21,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124393030] [2023-11-26 11:48:21,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:21,211 INFO L87 Difference]: Start difference. First operand 2186 states and 2835 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:24,245 INFO L93 Difference]: Finished difference Result 2573 states and 3484 transitions. [2023-11-26 11:48:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:48:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-11-26 11:48:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:24,261 INFO L225 Difference]: With dead ends: 2573 [2023-11-26 11:48:24,261 INFO L226 Difference]: Without dead ends: 2318 [2023-11-26 11:48:24,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:24,264 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 979 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:24,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1233 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 11:48:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2023-11-26 11:48:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2188. [2023-11-26 11:48:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1691 states have (on average 1.3045535186280308) internal successors, (2206), 1720 states have internal predecessors, (2206), 265 states have call successors, (265), 169 states have call predecessors, (265), 230 states have return successors, (365), 300 states have call predecessors, (365), 261 states have call successors, (365) [2023-11-26 11:48:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2836 transitions. [2023-11-26 11:48:24,631 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2836 transitions. Word has length 122 [2023-11-26 11:48:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:24,631 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 2836 transitions. [2023-11-26 11:48:24,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2836 transitions. [2023-11-26 11:48:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:48:24,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:24,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:48:24,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:24,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1261369489, now seen corresponding path program 1 times [2023-11-26 11:48:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62142104] [2023-11-26 11:48:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:48:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:48:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62142104] [2023-11-26 11:48:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62142104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:24,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:48:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878586507] [2023-11-26 11:48:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:24,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:24,848 INFO L87 Difference]: Start difference. First operand 2188 states and 2836 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:27,978 INFO L93 Difference]: Finished difference Result 2881 states and 3978 transitions. [2023-11-26 11:48:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:48:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-11-26 11:48:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:27,993 INFO L225 Difference]: With dead ends: 2881 [2023-11-26 11:48:27,994 INFO L226 Difference]: Without dead ends: 2632 [2023-11-26 11:48:27,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:48:27,997 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1277 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:27,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1026 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 11:48:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2023-11-26 11:48:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2447. [2023-11-26 11:48:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1926 states have (on average 1.3447559709241952) internal successors, (2590), 1956 states have internal predecessors, (2590), 282 states have call successors, (282), 175 states have call predecessors, (282), 237 states have return successors, (385), 317 states have call predecessors, (385), 278 states have call successors, (385) [2023-11-26 11:48:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3257 transitions. [2023-11-26 11:48:28,389 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3257 transitions. Word has length 122 [2023-11-26 11:48:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:28,390 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 3257 transitions. [2023-11-26 11:48:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3257 transitions. [2023-11-26 11:48:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:48:28,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:28,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:48:28,394 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1537294801, now seen corresponding path program 1 times [2023-11-26 11:48:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669401846] [2023-11-26 11:48:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:48:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:48:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669401846] [2023-11-26 11:48:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669401846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757461232] [2023-11-26 11:48:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:28,665 INFO L87 Difference]: Start difference. First operand 2447 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:32,748 INFO L93 Difference]: Finished difference Result 3502 states and 4994 transitions. [2023-11-26 11:48:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:48:32,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-11-26 11:48:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:32,772 INFO L225 Difference]: With dead ends: 3502 [2023-11-26 11:48:32,772 INFO L226 Difference]: Without dead ends: 2994 [2023-11-26 11:48:32,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:48:32,776 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1294 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:32,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1815 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2938 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 11:48:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-11-26 11:48:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2687. [2023-11-26 11:48:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2142 states have (on average 1.3706816059757236) internal successors, (2936), 2173 states have internal predecessors, (2936), 299 states have call successors, (299), 181 states have call predecessors, (299), 244 states have return successors, (404), 335 states have call predecessors, (404), 295 states have call successors, (404) [2023-11-26 11:48:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3639 transitions. [2023-11-26 11:48:33,153 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3639 transitions. Word has length 122 [2023-11-26 11:48:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:33,154 INFO L495 AbstractCegarLoop]: Abstraction has 2687 states and 3639 transitions. [2023-11-26 11:48:33,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3639 transitions. [2023-11-26 11:48:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:48:33,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:33,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:48:33,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -148000787, now seen corresponding path program 1 times [2023-11-26 11:48:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924232584] [2023-11-26 11:48:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:48:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:48:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:33,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924232584] [2023-11-26 11:48:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924232584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49632001] [2023-11-26 11:48:33,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:33,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:33,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:33,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:33,480 INFO L87 Difference]: Start difference. First operand 2687 states and 3639 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:37,289 INFO L93 Difference]: Finished difference Result 4413 states and 6476 transitions. [2023-11-26 11:48:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:48:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 122 [2023-11-26 11:48:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:37,309 INFO L225 Difference]: With dead ends: 4413 [2023-11-26 11:48:37,309 INFO L226 Difference]: Without dead ends: 3665 [2023-11-26 11:48:37,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:48:37,316 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1298 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2929 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:37,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1813 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2929 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 11:48:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2023-11-26 11:48:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3168. [2023-11-26 11:48:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 2575 states have (on average 1.4093203883495145) internal successors, (3629), 2608 states have internal predecessors, (3629), 333 states have call successors, (333), 193 states have call predecessors, (333), 258 states have return successors, (446), 371 states have call predecessors, (446), 329 states have call successors, (446) [2023-11-26 11:48:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4408 transitions. [2023-11-26 11:48:37,746 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4408 transitions. Word has length 122 [2023-11-26 11:48:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:37,747 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4408 transitions. [2023-11-26 11:48:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:48:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4408 transitions. [2023-11-26 11:48:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:48:37,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:37,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:37,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:48:37,751 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:37,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2113572463, now seen corresponding path program 1 times [2023-11-26 11:48:37,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362515044] [2023-11-26 11:48:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:48:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:48:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 11:48:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 11:48:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:38,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362515044] [2023-11-26 11:48:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362515044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:38,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:48:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973270093] [2023-11-26 11:48:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:48:38,012 INFO L87 Difference]: Start difference. First operand 3168 states and 4408 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)