./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:12:34,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:12:34,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:12:34,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:12:34,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:12:34,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:12:34,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:12:34,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:12:34,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:12:34,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:12:34,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:12:34,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:12:34,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:12:34,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:12:34,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:12:34,622 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:12:34,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:12:34,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:12:34,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:12:34,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:12:34,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:12:34,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:12:34,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:12:34,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:12:34,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:12:34,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:12:34,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:12:34,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:12:34,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:34,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:12:34,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:12:34,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:12:34,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:12:34,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:12:34,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:12:34,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:12:34,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:12:34,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:12:34,634 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:12:34,635 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_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a [2023-11-06 22:12:34,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:12:34,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:12:34,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:12:34,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:12:34,990 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:12:34,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2023-11-06 22:12:38,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:12:39,044 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:12:39,045 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2023-11-06 22:12:39,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/data/ab9b7cfa8/0b974a188f264c1ca8507b4cd943a5ee/FLAGcc0f79ed1 [2023-11-06 22:12:39,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/data/ab9b7cfa8/0b974a188f264c1ca8507b4cd943a5ee [2023-11-06 22:12:39,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:12:39,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:12:39,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:39,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:12:39,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:12:39,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:39,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c357598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39, skipping insertion in model container [2023-11-06 22:12:39,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:39,228 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:12:39,431 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_85beefea-f636-406e-aabb-788b9b50ddd1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2023-11-06 22:12:39,536 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_85beefea-f636-406e-aabb-788b9b50ddd1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2023-11-06 22:12:39,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:39,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:12:39,767 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_85beefea-f636-406e-aabb-788b9b50ddd1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2023-11-06 22:12:39,832 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_85beefea-f636-406e-aabb-788b9b50ddd1/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2023-11-06 22:12:39,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:39,988 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:12:39,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39 WrapperNode [2023-11-06 22:12:39,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:39,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:39,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:12:39,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:12:40,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,111 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1134 [2023-11-06 22:12:40,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:40,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:12:40,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:12:40,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:12:40,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:12:40,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:12:40,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:12:40,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:12:40,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (1/1) ... [2023-11-06 22:12:40,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:40,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:40,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:12:40,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:12:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:12:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:12:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:12:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-06 22:12:40,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-06 22:12:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-06 22:12:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-06 22:12:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-06 22:12:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-06 22:12:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-06 22:12:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-06 22:12:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-06 22:12:40,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-06 22:12:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-06 22:12:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-06 22:12:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-06 22:12:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-06 22:12:40,375 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-06 22:12:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-06 22:12:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-06 22:12:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-06 22:12:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-06 22:12:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-06 22:12:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:12:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-06 22:12:40,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-06 22:12:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-06 22:12:40,378 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-06 22:12:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:12:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:12:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-06 22:12:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-06 22:12:40,382 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-06 22:12:40,382 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-06 22:12:40,663 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:12:40,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:12:41,769 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:12:41,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:12:41,785 INFO L302 CfgBuilder]: Removed 20 assume(true) statements. [2023-11-06 22:12:41,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:41 BoogieIcfgContainer [2023-11-06 22:12:41,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:12:41,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:12:41,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:12:41,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:12:41,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:39" (1/3) ... [2023-11-06 22:12:41,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d2848c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:41, skipping insertion in model container [2023-11-06 22:12:41,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:39" (2/3) ... [2023-11-06 22:12:41,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d2848c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:41, skipping insertion in model container [2023-11-06 22:12:41,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:41" (3/3) ... [2023-11-06 22:12:41,800 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.15.cil.c [2023-11-06 22:12:41,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:12:41,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:12:41,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:12:41,938 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34f2041d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:12:41,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:12:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 467 states have (on average 1.6274089935760172) internal successors, (760), 475 states have internal predecessors, (760), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-06 22:12:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:41,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:41,968 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] [2023-11-06 22:12:41,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:41,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash -34087819, now seen corresponding path program 1 times [2023-11-06 22:12:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:41,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480047131] [2023-11-06 22:12:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:41,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:42,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:42,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480047131] [2023-11-06 22:12:42,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480047131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:42,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:42,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:12:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468200684] [2023-11-06 22:12:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:42,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:42,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:12:42,870 INFO L87 Difference]: Start difference. First operand has 528 states, 467 states have (on average 1.6274089935760172) internal successors, (760), 475 states have internal predecessors, (760), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:45,087 INFO L93 Difference]: Finished difference Result 1161 states and 1848 transitions. [2023-11-06 22:12:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:12:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 22:12:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:45,115 INFO L225 Difference]: With dead ends: 1161 [2023-11-06 22:12:45,115 INFO L226 Difference]: Without dead ends: 652 [2023-11-06 22:12:45,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:12:45,130 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1277 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:45,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1983 Invalid, 1570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:12:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-06 22:12:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 613. [2023-11-06 22:12:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 535 states have (on average 1.519626168224299) internal successors, (813), 542 states have internal predecessors, (813), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-11-06 22:12:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 922 transitions. [2023-11-06 22:12:45,299 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 922 transitions. Word has length 65 [2023-11-06 22:12:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:45,300 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 922 transitions. [2023-11-06 22:12:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 922 transitions. [2023-11-06 22:12:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:45,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:45,307 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] [2023-11-06 22:12:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:12:45,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:45,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 369698132, now seen corresponding path program 1 times [2023-11-06 22:12:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:45,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113543800] [2023-11-06 22:12:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113543800] [2023-11-06 22:12:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113543800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:45,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:12:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731651770] [2023-11-06 22:12:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:45,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:12:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:12:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:12:45,637 INFO L87 Difference]: Start difference. First operand 613 states and 922 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:12:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:47,728 INFO L93 Difference]: Finished difference Result 827 states and 1216 transitions. [2023-11-06 22:12:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:12:47,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-06 22:12:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:47,736 INFO L225 Difference]: With dead ends: 827 [2023-11-06 22:12:47,736 INFO L226 Difference]: Without dead ends: 650 [2023-11-06 22:12:47,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:12:47,740 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1039 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:47,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2803 Invalid, 2190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:12:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-06 22:12:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 618. [2023-11-06 22:12:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 539 states have (on average 1.5139146567717996) internal successors, (816), 546 states have internal predecessors, (816), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2023-11-06 22:12:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 926 transitions. [2023-11-06 22:12:47,811 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 926 transitions. Word has length 65 [2023-11-06 22:12:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:47,812 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 926 transitions. [2023-11-06 22:12:47,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:12:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 926 transitions. [2023-11-06 22:12:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:47,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:47,816 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] [2023-11-06 22:12:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:12:47,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:47,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash -659661166, now seen corresponding path program 1 times [2023-11-06 22:12:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674856636] [2023-11-06 22:12:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:47,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674856636] [2023-11-06 22:12:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674856636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:48,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:12:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525020422] [2023-11-06 22:12:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:48,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:48,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:48,130 INFO L87 Difference]: Start difference. First operand 618 states and 926 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-06 22:12:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:51,126 INFO L93 Difference]: Finished difference Result 1518 states and 2145 transitions. [2023-11-06 22:12:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 22:12:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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 65 [2023-11-06 22:12:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:51,143 INFO L225 Difference]: With dead ends: 1518 [2023-11-06 22:12:51,144 INFO L226 Difference]: Without dead ends: 1324 [2023-11-06 22:12:51,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:12:51,155 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 3901 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:51,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 2864 Invalid, 2517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:12:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-11-06 22:12:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1199. [2023-11-06 22:12:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1001 states have (on average 1.4285714285714286) internal successors, (1430), 1016 states have internal predecessors, (1430), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2023-11-06 22:12:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1666 transitions. [2023-11-06 22:12:51,368 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1666 transitions. Word has length 65 [2023-11-06 22:12:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1666 transitions. [2023-11-06 22:12:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-06 22:12:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1666 transitions. [2023-11-06 22:12:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:51,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:51,375 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] [2023-11-06 22:12:51,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:12:51,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:51,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 391787923, now seen corresponding path program 1 times [2023-11-06 22:12:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551669435] [2023-11-06 22:12:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551669435] [2023-11-06 22:12:51,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551669435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:51,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:51,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:12:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536917286] [2023-11-06 22:12:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:51,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:12:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:12:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:12:51,620 INFO L87 Difference]: Start difference. First operand 1199 states and 1666 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:12:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:53,832 INFO L93 Difference]: Finished difference Result 2080 states and 2809 transitions. [2023-11-06 22:12:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:12:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-06 22:12:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:53,843 INFO L225 Difference]: With dead ends: 2080 [2023-11-06 22:12:53,843 INFO L226 Difference]: Without dead ends: 1311 [2023-11-06 22:12:53,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:12:53,858 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 700 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:53,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 3164 Invalid, 2180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 22:12:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-11-06 22:12:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1219. [2023-11-06 22:12:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1017 states have (on average 1.4169124877089478) internal successors, (1441), 1032 states have internal predecessors, (1441), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2023-11-06 22:12:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1681 transitions. [2023-11-06 22:12:54,018 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1681 transitions. Word has length 65 [2023-11-06 22:12:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1681 transitions. [2023-11-06 22:12:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:12:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1681 transitions. [2023-11-06 22:12:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:54,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:54,029 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] [2023-11-06 22:12:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:12:54,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:54,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1777991317, now seen corresponding path program 1 times [2023-11-06 22:12:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251781146] [2023-11-06 22:12:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:54,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251781146] [2023-11-06 22:12:54,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251781146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:54,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:54,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:12:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450410175] [2023-11-06 22:12:54,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:54,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:12:54,370 INFO L87 Difference]: Start difference. First operand 1219 states and 1681 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:56,451 INFO L93 Difference]: Finished difference Result 2787 states and 3628 transitions. [2023-11-06 22:12:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:12:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 22:12:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:56,466 INFO L225 Difference]: With dead ends: 2787 [2023-11-06 22:12:56,466 INFO L226 Difference]: Without dead ends: 1999 [2023-11-06 22:12:56,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:12:56,470 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1548 mSDsluCounter, 1910 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 2335 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:12:56,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-11-06 22:12:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1667. [2023-11-06 22:12:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1370 states have (on average 1.3795620437956204) internal successors, (1890), 1394 states have internal predecessors, (1890), 157 states have call successors, (157), 114 states have call predecessors, (157), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2023-11-06 22:12:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2248 transitions. [2023-11-06 22:12:56,680 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2248 transitions. Word has length 65 [2023-11-06 22:12:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:56,681 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2248 transitions. [2023-11-06 22:12:56,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2248 transitions. [2023-11-06 22:12:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:12:56,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:56,683 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] [2023-11-06 22:12:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:12:56,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:56,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1643977811, now seen corresponding path program 1 times [2023-11-06 22:12:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413326578] [2023-11-06 22:12:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413326578] [2023-11-06 22:12:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413326578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:12:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139709072] [2023-11-06 22:12:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:12:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:12:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:12:56,884 INFO L87 Difference]: Start difference. First operand 1667 states and 2248 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:12:58,196 INFO L93 Difference]: Finished difference Result 4145 states and 5402 transitions. [2023-11-06 22:12:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:12:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2023-11-06 22:12:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:12:58,221 INFO L225 Difference]: With dead ends: 4145 [2023-11-06 22:12:58,221 INFO L226 Difference]: Without dead ends: 2911 [2023-11-06 22:12:58,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:12:58,227 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1894 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:12:58,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 1552 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:12:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-11-06 22:12:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2803. [2023-11-06 22:12:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2241 states have (on average 1.3141454707719769) internal successors, (2945), 2287 states have internal predecessors, (2945), 286 states have call successors, (286), 220 states have call predecessors, (286), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2023-11-06 22:12:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3646 transitions. [2023-11-06 22:12:58,619 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3646 transitions. Word has length 65 [2023-11-06 22:12:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:12:58,620 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 3646 transitions. [2023-11-06 22:12:58,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:12:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3646 transitions. [2023-11-06 22:12:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:12:58,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:12:58,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:58,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:12:58,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:12:58,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:58,625 INFO L85 PathProgramCache]: Analyzing trace with hash 106133636, now seen corresponding path program 1 times [2023-11-06 22:12:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:58,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312213001] [2023-11-06 22:12:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:58,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:12:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:12:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:12:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:12:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:12:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:12:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:12:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:58,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312213001] [2023-11-06 22:12:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312213001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:58,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:12:58,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630408059] [2023-11-06 22:12:58,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:12:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:12:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:12:58,737 INFO L87 Difference]: Start difference. First operand 2803 states and 3646 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:13:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:00,307 INFO L93 Difference]: Finished difference Result 6255 states and 7978 transitions. [2023-11-06 22:13:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-06 22:13:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:00,337 INFO L225 Difference]: With dead ends: 6255 [2023-11-06 22:13:00,337 INFO L226 Difference]: Without dead ends: 3892 [2023-11-06 22:13:00,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:00,347 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 881 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:00,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1916 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:13:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-11-06 22:13:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3636. [2023-11-06 22:13:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 2886 states have (on average 1.2945252945252945) internal successors, (3736), 2939 states have internal predecessors, (3736), 378 states have call successors, (378), 300 states have call predecessors, (378), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2023-11-06 22:13:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 4647 transitions. [2023-11-06 22:13:00,788 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 4647 transitions. Word has length 66 [2023-11-06 22:13:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:00,789 INFO L495 AbstractCegarLoop]: Abstraction has 3636 states and 4647 transitions. [2023-11-06 22:13:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:13:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 4647 transitions. [2023-11-06 22:13:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:13:00,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:00,794 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] [2023-11-06 22:13:00,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:13:00,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:00,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash -832014877, now seen corresponding path program 1 times [2023-11-06 22:13:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611469018] [2023-11-06 22:13:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611469018] [2023-11-06 22:13:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611469018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:01,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:01,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:13:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706783109] [2023-11-06 22:13:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:01,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:01,046 INFO L87 Difference]: Start difference. First operand 3636 states and 4647 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:13:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:02,440 INFO L93 Difference]: Finished difference Result 7647 states and 9621 transitions. [2023-11-06 22:13:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:02,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-06 22:13:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:02,477 INFO L225 Difference]: With dead ends: 7647 [2023-11-06 22:13:02,478 INFO L226 Difference]: Without dead ends: 4447 [2023-11-06 22:13:02,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:02,489 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1488 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:02,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1625 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:13:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2023-11-06 22:13:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 4199. [2023-11-06 22:13:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4199 states, 3333 states have (on average 1.285028502850285) internal successors, (4283), 3392 states have internal predecessors, (4283), 434 states have call successors, (434), 350 states have call predecessors, (434), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2023-11-06 22:13:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 5327 transitions. [2023-11-06 22:13:03,097 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 5327 transitions. Word has length 72 [2023-11-06 22:13:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:03,097 INFO L495 AbstractCegarLoop]: Abstraction has 4199 states and 5327 transitions. [2023-11-06 22:13:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:13:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 5327 transitions. [2023-11-06 22:13:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 22:13:03,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:03,103 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:13:03,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:03,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash -539690255, now seen corresponding path program 1 times [2023-11-06 22:13:03,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:03,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070887290] [2023-11-06 22:13:03,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:03,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070887290] [2023-11-06 22:13:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070887290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:03,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:03,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:13:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495504148] [2023-11-06 22:13:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:13:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:13:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:13:03,253 INFO L87 Difference]: Start difference. First operand 4199 states and 5327 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:13:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:04,822 INFO L93 Difference]: Finished difference Result 5268 states and 6611 transitions. [2023-11-06 22:13:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:13:04,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-11-06 22:13:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:04,859 INFO L225 Difference]: With dead ends: 5268 [2023-11-06 22:13:04,860 INFO L226 Difference]: Without dead ends: 5265 [2023-11-06 22:13:04,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:13:04,864 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 2614 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:04,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 1227 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:13:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2023-11-06 22:13:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 4956. [2023-11-06 22:13:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 3911 states have (on average 1.2730759396573765) internal successors, (4979), 3977 states have internal predecessors, (4979), 517 states have call successors, (517), 422 states have call predecessors, (517), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2023-11-06 22:13:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 6234 transitions. [2023-11-06 22:13:05,488 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 6234 transitions. Word has length 73 [2023-11-06 22:13:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:05,489 INFO L495 AbstractCegarLoop]: Abstraction has 4956 states and 6234 transitions. [2023-11-06 22:13:05,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:13:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 6234 transitions. [2023-11-06 22:13:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:13:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:05,492 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:13:05,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:05,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 447934445, now seen corresponding path program 1 times [2023-11-06 22:13:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356842630] [2023-11-06 22:13:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:05,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356842630] [2023-11-06 22:13:05,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356842630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983486213] [2023-11-06 22:13:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:05,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:05,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:05,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:13:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:05,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:13:05,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:06,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:06,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983486213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:06,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:13:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-06 22:13:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728766224] [2023-11-06 22:13:06,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:13:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:13:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:06,306 INFO L87 Difference]: Start difference. First operand 4956 states and 6234 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:13:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:09,914 INFO L93 Difference]: Finished difference Result 9470 states and 11719 transitions. [2023-11-06 22:13:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:13:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2023-11-06 22:13:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:09,981 INFO L225 Difference]: With dead ends: 9470 [2023-11-06 22:13:09,982 INFO L226 Difference]: Without dead ends: 9467 [2023-11-06 22:13:09,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:13:09,987 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 3033 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:09,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 2651 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:13:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2023-11-06 22:13:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 8581. [2023-11-06 22:13:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8581 states, 6746 states have (on average 1.2560035576638007) internal successors, (8473), 6863 states have internal predecessors, (8473), 895 states have call successors, (895), 754 states have call predecessors, (895), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2023-11-06 22:13:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8581 states to 8581 states and 10663 transitions. [2023-11-06 22:13:11,169 INFO L78 Accepts]: Start accepts. Automaton has 8581 states and 10663 transitions. Word has length 74 [2023-11-06 22:13:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:11,169 INFO L495 AbstractCegarLoop]: Abstraction has 8581 states and 10663 transitions. [2023-11-06 22:13:11,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:13:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8581 states and 10663 transitions. [2023-11-06 22:13:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:13:11,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:11,173 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:11,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:13:11,390 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:11,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1772710799, now seen corresponding path program 2 times [2023-11-06 22:13:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222194644] [2023-11-06 22:13:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222194644] [2023-11-06 22:13:11,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222194644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:11,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:11,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:13:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817504091] [2023-11-06 22:13:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:11,491 INFO L87 Difference]: Start difference. First operand 8581 states and 10663 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:13:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:13,139 INFO L93 Difference]: Finished difference Result 11611 states and 14410 transitions. [2023-11-06 22:13:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:13:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2023-11-06 22:13:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:13,184 INFO L225 Difference]: With dead ends: 11611 [2023-11-06 22:13:13,185 INFO L226 Difference]: Without dead ends: 4813 [2023-11-06 22:13:13,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:13,204 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1759 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:13,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 1289 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:13:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2023-11-06 22:13:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 3744. [2023-11-06 22:13:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2977 states have (on average 1.2653678199529728) internal successors, (3767), 3016 states have internal predecessors, (3767), 394 states have call successors, (394), 318 states have call predecessors, (394), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2023-11-06 22:13:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 4680 transitions. [2023-11-06 22:13:13,666 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 4680 transitions. Word has length 77 [2023-11-06 22:13:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:13,667 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 4680 transitions. [2023-11-06 22:13:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:13:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 4680 transitions. [2023-11-06 22:13:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:13:13,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:13,672 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, 1, 1, 1] [2023-11-06 22:13:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:13:13,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:13,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash -276928801, now seen corresponding path program 1 times [2023-11-06 22:13:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779773512] [2023-11-06 22:13:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:13,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:13:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:13:13,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:13,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779773512] [2023-11-06 22:13:13,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779773512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:13,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:13,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:13:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103336962] [2023-11-06 22:13:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:13,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:13:13,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:13:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:13:13,846 INFO L87 Difference]: Start difference. First operand 3744 states and 4680 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:13:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:16,295 INFO L93 Difference]: Finished difference Result 10352 states and 12703 transitions. [2023-11-06 22:13:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:13:16,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2023-11-06 22:13:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:16,321 INFO L225 Difference]: With dead ends: 10352 [2023-11-06 22:13:16,321 INFO L226 Difference]: Without dead ends: 5976 [2023-11-06 22:13:16,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:13:16,335 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1577 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:16,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 2040 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:13:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5976 states. [2023-11-06 22:13:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5976 to 5712. [2023-11-06 22:13:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 4472 states have (on average 1.2285330948121647) internal successors, (5494), 4554 states have internal predecessors, (5494), 610 states have call successors, (610), 504 states have call predecessors, (610), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2023-11-06 22:13:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 7007 transitions. [2023-11-06 22:13:17,117 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 7007 transitions. Word has length 84 [2023-11-06 22:13:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:17,117 INFO L495 AbstractCegarLoop]: Abstraction has 5712 states and 7007 transitions. [2023-11-06 22:13:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:13:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 7007 transitions. [2023-11-06 22:13:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 22:13:17,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:17,123 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:17,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:13:17,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:17,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash 630575919, now seen corresponding path program 1 times [2023-11-06 22:13:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409823062] [2023-11-06 22:13:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:13:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:13:17,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409823062] [2023-11-06 22:13:17,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409823062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:17,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:17,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:13:17,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165945037] [2023-11-06 22:13:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:17,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:13:17,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:13:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:13:17,324 INFO L87 Difference]: Start difference. First operand 5712 states and 7007 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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) [2023-11-06 22:13:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:20,072 INFO L93 Difference]: Finished difference Result 9359 states and 11365 transitions. [2023-11-06 22:13:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:13:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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 93 [2023-11-06 22:13:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:20,094 INFO L225 Difference]: With dead ends: 9359 [2023-11-06 22:13:20,094 INFO L226 Difference]: Without dead ends: 4810 [2023-11-06 22:13:20,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:13:20,108 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2531 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:20,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2571 Valid, 2430 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:13:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2023-11-06 22:13:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4379. [2023-11-06 22:13:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3425 states have (on average 1.2181021897810218) internal successors, (4172), 3490 states have internal predecessors, (4172), 467 states have call successors, (467), 379 states have call predecessors, (467), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2023-11-06 22:13:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 5284 transitions. [2023-11-06 22:13:20,646 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 5284 transitions. Word has length 93 [2023-11-06 22:13:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 4379 states and 5284 transitions. [2023-11-06 22:13:20,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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) [2023-11-06 22:13:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 5284 transitions. [2023-11-06 22:13:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-06 22:13:20,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:20,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:13:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:13:20,654 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:20,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1674276325, now seen corresponding path program 1 times [2023-11-06 22:13:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:20,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897904049] [2023-11-06 22:13:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:13:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:13:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:13:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:13:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 22:13:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 22:13:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:13:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:13:20,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897904049] [2023-11-06 22:13:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897904049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500605704] [2023-11-06 22:13:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:20,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:20,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:13:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:21,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:13:21,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:13:21,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500605704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:21,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:21,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-11-06 22:13:21,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925012536] [2023-11-06 22:13:21,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:21,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:13:21,202 INFO L87 Difference]: Start difference. First operand 4379 states and 5284 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:13:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:21,621 INFO L93 Difference]: Finished difference Result 6599 states and 7923 transitions. [2023-11-06 22:13:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-06 22:13:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:21,633 INFO L225 Difference]: With dead ends: 6599 [2023-11-06 22:13:21,633 INFO L226 Difference]: Without dead ends: 2660 [2023-11-06 22:13:21,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:13:21,643 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 34 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:21,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3895 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:13:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-11-06 22:13:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2504. [2023-11-06 22:13:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2050 states have (on average 1.2409756097560976) internal successors, (2544), 2069 states have internal predecessors, (2544), 229 states have call successors, (229), 173 states have call predecessors, (229), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2023-11-06 22:13:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3082 transitions. [2023-11-06 22:13:21,936 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3082 transitions. Word has length 145 [2023-11-06 22:13:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:21,937 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 3082 transitions. [2023-11-06 22:13:21,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:13:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3082 transitions. [2023-11-06 22:13:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-06 22:13:21,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:21,943 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:21,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:22,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:13:22,150 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:22,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1640362905, now seen corresponding path program 1 times [2023-11-06 22:13:22,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:22,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467195476] [2023-11-06 22:13:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:22,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:13:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:13:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:13:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:13:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:13:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-06 22:13:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-06 22:13:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 22:13:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467195476] [2023-11-06 22:13:22,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467195476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:22,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:22,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:13:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32605966] [2023-11-06 22:13:22,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:22,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:22,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:22,291 INFO L87 Difference]: Start difference. First operand 2504 states and 3082 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:13:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:23,422 INFO L93 Difference]: Finished difference Result 2558 states and 3138 transitions. [2023-11-06 22:13:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2023-11-06 22:13:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:23,428 INFO L225 Difference]: With dead ends: 2558 [2023-11-06 22:13:23,428 INFO L226 Difference]: Without dead ends: 2040 [2023-11-06 22:13:23,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:23,431 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 801 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:23,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1857 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:13:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2023-11-06 22:13:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1989. [2023-11-06 22:13:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1653 states have (on average 1.2661826981246218) internal successors, (2093), 1668 states have internal predecessors, (2093), 172 states have call successors, (172), 124 states have call predecessors, (172), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2023-11-06 22:13:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2496 transitions. [2023-11-06 22:13:23,694 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2496 transitions. Word has length 147 [2023-11-06 22:13:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:23,694 INFO L495 AbstractCegarLoop]: Abstraction has 1989 states and 2496 transitions. [2023-11-06 22:13:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:13:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2496 transitions. [2023-11-06 22:13:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-06 22:13:23,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:23,700 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:23,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:13:23,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:23,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:23,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1598815429, now seen corresponding path program 1 times [2023-11-06 22:13:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392130155] [2023-11-06 22:13:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:13:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 22:13:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:13:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 22:13:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 22:13:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-06 22:13:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 22:13:23,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392130155] [2023-11-06 22:13:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392130155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:13:23,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079470848] [2023-11-06 22:13:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:23,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:13:23,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:13:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:13:23,881 INFO L87 Difference]: Start difference. First operand 1989 states and 2496 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:13:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:25,293 INFO L93 Difference]: Finished difference Result 3272 states and 4016 transitions. [2023-11-06 22:13:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:13:25,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2023-11-06 22:13:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:25,300 INFO L225 Difference]: With dead ends: 3272 [2023-11-06 22:13:25,301 INFO L226 Difference]: Without dead ends: 1882 [2023-11-06 22:13:25,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:25,305 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 726 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:25,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 2391 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:13:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-11-06 22:13:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1736. [2023-11-06 22:13:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1451 states have (on average 1.2839421088904204) internal successors, (1863), 1466 states have internal predecessors, (1863), 147 states have call successors, (147), 103 states have call predecessors, (147), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2023-11-06 22:13:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2203 transitions. [2023-11-06 22:13:25,565 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2203 transitions. Word has length 159 [2023-11-06 22:13:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:25,566 INFO L495 AbstractCegarLoop]: Abstraction has 1736 states and 2203 transitions. [2023-11-06 22:13:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:13:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2203 transitions. [2023-11-06 22:13:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 22:13:25,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:25,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:25,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:13:25,570 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:25,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:25,571 INFO L85 PathProgramCache]: Analyzing trace with hash 782951110, now seen corresponding path program 1 times [2023-11-06 22:13:25,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:25,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450898526] [2023-11-06 22:13:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:13:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:13:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:13:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:13:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:13:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:13:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-06 22:13:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 22:13:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 22:13:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:13:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450898526] [2023-11-06 22:13:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450898526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:13:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555681273] [2023-11-06 22:13:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:26,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:13:26,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:26,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:13:26,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:13:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:13:26,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-06 22:13:26,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555681273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:13:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-06 22:13:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483435207] [2023-11-06 22:13:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:26,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:26,491 INFO L87 Difference]: Start difference. First operand 1736 states and 2203 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:27,614 INFO L93 Difference]: Finished difference Result 4062 states and 5011 transitions. [2023-11-06 22:13:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:13:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2023-11-06 22:13:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:27,624 INFO L225 Difference]: With dead ends: 4062 [2023-11-06 22:13:27,624 INFO L226 Difference]: Without dead ends: 2652 [2023-11-06 22:13:27,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:13:27,630 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 401 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:27,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1220 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:13:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2023-11-06 22:13:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2610. [2023-11-06 22:13:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2182 states have (on average 1.237396883593034) internal successors, (2700), 2201 states have internal predecessors, (2700), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-11-06 22:13:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3221 transitions. [2023-11-06 22:13:28,016 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3221 transitions. Word has length 162 [2023-11-06 22:13:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:28,017 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3221 transitions. [2023-11-06 22:13:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3221 transitions. [2023-11-06 22:13:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:13:28,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:28,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:28,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85beefea-f636-406e-aabb-788b9b50ddd1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:13:28,230 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:28,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -372771871, now seen corresponding path program 1 times [2023-11-06 22:13:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634092927] [2023-11-06 22:13:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:13:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:13:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:13:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:28,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634092927] [2023-11-06 22:13:28,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634092927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:13:28,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608644468] [2023-11-06 22:13:28,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:13:28,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:13:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:13:28,600 INFO L87 Difference]: Start difference. First operand 2610 states and 3221 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:13:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:32,684 INFO L93 Difference]: Finished difference Result 3178 states and 4135 transitions. [2023-11-06 22:13:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2023-11-06 22:13:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:32,693 INFO L225 Difference]: With dead ends: 3178 [2023-11-06 22:13:32,693 INFO L226 Difference]: Without dead ends: 2763 [2023-11-06 22:13:32,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:13:32,696 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1235 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:32,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1079 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:13:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2023-11-06 22:13:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2610. [2023-11-06 22:13:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2182 states have (on average 1.2369385884509625) internal successors, (2699), 2201 states have internal predecessors, (2699), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-11-06 22:13:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3220 transitions. [2023-11-06 22:13:33,481 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3220 transitions. Word has length 190 [2023-11-06 22:13:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:33,482 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3220 transitions. [2023-11-06 22:13:33,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:13:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3220 transitions. [2023-11-06 22:13:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:13:33,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:33,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:13:33,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:33,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 975361699, now seen corresponding path program 1 times [2023-11-06 22:13:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:33,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971466248] [2023-11-06 22:13:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:13:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:13:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:13:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:33,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971466248] [2023-11-06 22:13:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971466248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:13:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235341513] [2023-11-06 22:13:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:33,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:13:33,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:13:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:13:33,809 INFO L87 Difference]: Start difference. First operand 2610 states and 3220 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:13:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:37,761 INFO L93 Difference]: Finished difference Result 3170 states and 4118 transitions. [2023-11-06 22:13:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:13:37,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2023-11-06 22:13:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:37,770 INFO L225 Difference]: With dead ends: 3170 [2023-11-06 22:13:37,771 INFO L226 Difference]: Without dead ends: 2763 [2023-11-06 22:13:37,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:13:37,774 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1226 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:37,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1077 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:13:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2023-11-06 22:13:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2610. [2023-11-06 22:13:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 2182 states have (on average 1.236480293308891) internal successors, (2698), 2201 states have internal predecessors, (2698), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2023-11-06 22:13:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3219 transitions. [2023-11-06 22:13:38,397 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3219 transitions. Word has length 190 [2023-11-06 22:13:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:38,397 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3219 transitions. [2023-11-06 22:13:38,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:13:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3219 transitions. [2023-11-06 22:13:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:13:38,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:38,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:13:38,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:38,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1806015333, now seen corresponding path program 1 times [2023-11-06 22:13:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398881166] [2023-11-06 22:13:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:13:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:13:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:13:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398881166] [2023-11-06 22:13:38,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398881166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:38,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:13:38,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733843947] [2023-11-06 22:13:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:38,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:38,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:38,751 INFO L87 Difference]: Start difference. First operand 2610 states and 3219 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-06 22:13:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:44,324 INFO L93 Difference]: Finished difference Result 3736 states and 5030 transitions. [2023-11-06 22:13:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2023-11-06 22:13:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:44,335 INFO L225 Difference]: With dead ends: 3736 [2023-11-06 22:13:44,335 INFO L226 Difference]: Without dead ends: 3336 [2023-11-06 22:13:44,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:44,339 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1916 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:44,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1655 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:13:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2023-11-06 22:13:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3029. [2023-11-06 22:13:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 2572 states have (on average 1.2888802488335926) internal successors, (3315), 2592 states have internal predecessors, (3315), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2023-11-06 22:13:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3883 transitions. [2023-11-06 22:13:45,221 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3883 transitions. Word has length 190 [2023-11-06 22:13:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:45,221 INFO L495 AbstractCegarLoop]: Abstraction has 3029 states and 3883 transitions. [2023-11-06 22:13:45,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-06 22:13:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3883 transitions. [2023-11-06 22:13:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:13:45,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:45,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:45,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:13:45,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:45,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash -41011103, now seen corresponding path program 1 times [2023-11-06 22:13:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:45,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078974556] [2023-11-06 22:13:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:45,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:13:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:13:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:13:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078974556] [2023-11-06 22:13:45,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078974556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:45,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:13:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598931249] [2023-11-06 22:13:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:13:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:13:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:13:45,590 INFO L87 Difference]: Start difference. First operand 3029 states and 3883 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:13:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:52,853 INFO L93 Difference]: Finished difference Result 4748 states and 6653 transitions. [2023-11-06 22:13:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:13:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:13:52,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:52,862 INFO L225 Difference]: With dead ends: 4748 [2023-11-06 22:13:52,862 INFO L226 Difference]: Without dead ends: 3929 [2023-11-06 22:13:52,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:13:52,866 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1951 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:52,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 3069 Invalid, 4205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [101 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:13:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2023-11-06 22:13:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3419. [2023-11-06 22:13:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 2933 states have (on average 1.3208319127173542) internal successors, (3874), 2954 states have internal predecessors, (3874), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2023-11-06 22:13:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4488 transitions. [2023-11-06 22:13:53,630 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4488 transitions. Word has length 190 [2023-11-06 22:13:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:53,630 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 4488 transitions. [2023-11-06 22:13:53,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:13:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4488 transitions. [2023-11-06 22:13:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:13:53,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:53,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:13:53,634 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:53,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1964261533, now seen corresponding path program 1 times [2023-11-06 22:13:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:53,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218585102] [2023-11-06 22:13:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:13:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:13:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:13:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:13:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218585102] [2023-11-06 22:13:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218585102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:13:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581503409] [2023-11-06 22:13:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:53,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:13:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:13:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:13:53,989 INFO L87 Difference]: Start difference. First operand 3419 states and 4488 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:01,749 INFO L93 Difference]: Finished difference Result 6241 states and 9026 transitions. [2023-11-06 22:14:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:14:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:01,775 INFO L225 Difference]: With dead ends: 6241 [2023-11-06 22:14:01,776 INFO L226 Difference]: Without dead ends: 5032 [2023-11-06 22:14:01,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:14:01,787 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1949 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:01,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 3067 Invalid, 4203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-06 22:14:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5032 states. [2023-11-06 22:14:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 4200. [2023-11-06 22:14:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3656 states have (on average 1.3657002188183807) internal successors, (4993), 3679 states have internal predecessors, (4993), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-11-06 22:14:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5703 transitions. [2023-11-06 22:14:02,840 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5703 transitions. Word has length 190 [2023-11-06 22:14:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:02,840 INFO L495 AbstractCegarLoop]: Abstraction has 4200 states and 5703 transitions. [2023-11-06 22:14:02,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5703 transitions. [2023-11-06 22:14:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:02,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:02,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:14:02,845 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:02,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 606097441, now seen corresponding path program 1 times [2023-11-06 22:14:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572446401] [2023-11-06 22:14:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572446401] [2023-11-06 22:14:03,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572446401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:03,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:03,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:03,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529526538] [2023-11-06 22:14:03,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:03,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:03,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:03,179 INFO L87 Difference]: Start difference. First operand 4200 states and 5703 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:07,598 INFO L93 Difference]: Finished difference Result 7010 states and 10232 transitions. [2023-11-06 22:14:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:07,614 INFO L225 Difference]: With dead ends: 7010 [2023-11-06 22:14:07,614 INFO L226 Difference]: Without dead ends: 5020 [2023-11-06 22:14:07,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:07,624 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1455 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:07,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1677 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:14:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2023-11-06 22:14:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 4200. [2023-11-06 22:14:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3656 states have (on average 1.364332603938731) internal successors, (4988), 3679 states have internal predecessors, (4988), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-11-06 22:14:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5698 transitions. [2023-11-06 22:14:08,559 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5698 transitions. Word has length 190 [2023-11-06 22:14:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:08,560 INFO L495 AbstractCegarLoop]: Abstraction has 4200 states and 5698 transitions. [2023-11-06 22:14:08,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5698 transitions. [2023-11-06 22:14:08,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:08,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:08,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:08,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:14:08,564 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:08,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1104654243, now seen corresponding path program 1 times [2023-11-06 22:14:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820727288] [2023-11-06 22:14:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820727288] [2023-11-06 22:14:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820727288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153541409] [2023-11-06 22:14:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:08,962 INFO L87 Difference]: Start difference. First operand 4200 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:12,938 INFO L93 Difference]: Finished difference Result 7004 states and 10206 transitions. [2023-11-06 22:14:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:12,953 INFO L225 Difference]: With dead ends: 7004 [2023-11-06 22:14:12,954 INFO L226 Difference]: Without dead ends: 5014 [2023-11-06 22:14:12,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:12,960 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1689 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:12,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 1400 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:14:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2023-11-06 22:14:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 4200. [2023-11-06 22:14:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3656 states have (on average 1.362964989059081) internal successors, (4983), 3679 states have internal predecessors, (4983), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-11-06 22:14:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5693 transitions. [2023-11-06 22:14:13,777 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5693 transitions. Word has length 190 [2023-11-06 22:14:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:13,778 INFO L495 AbstractCegarLoop]: Abstraction has 4200 states and 5693 transitions. [2023-11-06 22:14:13,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5693 transitions. [2023-11-06 22:14:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:13,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:13,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:13,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:14:13,783 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:13,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1674926049, now seen corresponding path program 1 times [2023-11-06 22:14:13,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:13,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154009800] [2023-11-06 22:14:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:14,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154009800] [2023-11-06 22:14:14,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154009800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:14,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:14,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934340887] [2023-11-06 22:14:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:14,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:14,123 INFO L87 Difference]: Start difference. First operand 4200 states and 5693 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:18,548 INFO L93 Difference]: Finished difference Result 6992 states and 10168 transitions. [2023-11-06 22:14:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:18,565 INFO L225 Difference]: With dead ends: 6992 [2023-11-06 22:14:18,565 INFO L226 Difference]: Without dead ends: 5002 [2023-11-06 22:14:18,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:18,572 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1541 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:18,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 1676 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:14:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2023-11-06 22:14:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4200. [2023-11-06 22:14:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3656 states have (on average 1.3615973741794312) internal successors, (4978), 3679 states have internal predecessors, (4978), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2023-11-06 22:14:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5688 transitions. [2023-11-06 22:14:19,581 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5688 transitions. Word has length 190 [2023-11-06 22:14:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:19,582 INFO L495 AbstractCegarLoop]: Abstraction has 4200 states and 5688 transitions. [2023-11-06 22:14:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5688 transitions. [2023-11-06 22:14:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:19,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:19,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:19,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:14:19,585 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:19,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 888928159, now seen corresponding path program 1 times [2023-11-06 22:14:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:19,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819996525] [2023-11-06 22:14:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:19,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819996525] [2023-11-06 22:14:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819996525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254919378] [2023-11-06 22:14:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:19,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:19,939 INFO L87 Difference]: Start difference. First operand 4200 states and 5688 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:28,075 INFO L93 Difference]: Finished difference Result 9089 states and 13445 transitions. [2023-11-06 22:14:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:14:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:28,096 INFO L225 Difference]: With dead ends: 9089 [2023-11-06 22:14:28,097 INFO L226 Difference]: Without dead ends: 7099 [2023-11-06 22:14:28,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:14:28,105 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1928 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:28,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 3067 Invalid, 4097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 3994 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:14:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7099 states. [2023-11-06 22:14:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7099 to 5781. [2023-11-06 22:14:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5781 states, 5121 states have (on average 1.411833626244874) internal successors, (7230), 5148 states have internal predecessors, (7230), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2023-11-06 22:14:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8138 transitions. [2023-11-06 22:14:29,480 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8138 transitions. Word has length 190 [2023-11-06 22:14:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:29,480 INFO L495 AbstractCegarLoop]: Abstraction has 5781 states and 8138 transitions. [2023-11-06 22:14:29,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8138 transitions. [2023-11-06 22:14:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:29,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:29,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:14:29,485 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:29,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1556310049, now seen corresponding path program 1 times [2023-11-06 22:14:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814516465] [2023-11-06 22:14:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:29,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:29,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814516465] [2023-11-06 22:14:29,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814516465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:29,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:29,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071712683] [2023-11-06 22:14:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:29,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:29,802 INFO L87 Difference]: Start difference. First operand 5781 states and 8138 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:35,145 INFO L93 Difference]: Finished difference Result 10694 states and 15971 transitions. [2023-11-06 22:14:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:35,169 INFO L225 Difference]: With dead ends: 10694 [2023-11-06 22:14:35,170 INFO L226 Difference]: Without dead ends: 7123 [2023-11-06 22:14:35,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:35,180 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1454 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:35,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1677 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:14:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2023-11-06 22:14:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 5781. [2023-11-06 22:14:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5781 states, 5121 states have (on average 1.4100761570005858) internal successors, (7221), 5148 states have internal predecessors, (7221), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2023-11-06 22:14:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8129 transitions. [2023-11-06 22:14:37,035 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8129 transitions. Word has length 190 [2023-11-06 22:14:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:37,036 INFO L495 AbstractCegarLoop]: Abstraction has 5781 states and 8129 transitions. [2023-11-06 22:14:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8129 transitions. [2023-11-06 22:14:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:37,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:37,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:14:37,042 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:37,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -638918817, now seen corresponding path program 1 times [2023-11-06 22:14:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138422847] [2023-11-06 22:14:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138422847] [2023-11-06 22:14:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138422847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441129370] [2023-11-06 22:14:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:37,489 INFO L87 Difference]: Start difference. First operand 5781 states and 8129 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:47,005 INFO L93 Difference]: Finished difference Result 14826 states and 22405 transitions. [2023-11-06 22:14:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:14:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:14:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:47,033 INFO L225 Difference]: With dead ends: 14826 [2023-11-06 22:14:47,033 INFO L226 Difference]: Without dead ends: 11255 [2023-11-06 22:14:47,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:14:47,041 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1920 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:47,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1950 Valid, 3067 Invalid, 4059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:14:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11255 states. [2023-11-06 22:14:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11255 to 8951. [2023-11-06 22:14:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8951 states, 8059 states have (on average 1.454398808785209) internal successors, (11721), 8094 states have internal predecessors, (11721), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2023-11-06 22:14:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 13043 transitions. [2023-11-06 22:14:49,700 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 13043 transitions. Word has length 190 [2023-11-06 22:14:49,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:49,700 INFO L495 AbstractCegarLoop]: Abstraction has 8951 states and 13043 transitions. [2023-11-06 22:14:49,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:14:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 13043 transitions. [2023-11-06 22:14:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:14:49,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:49,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:14:49,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:49,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -294090655, now seen corresponding path program 1 times [2023-11-06 22:14:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860865312] [2023-11-06 22:14:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:14:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:14:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:14:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860865312] [2023-11-06 22:14:50,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860865312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:50,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:50,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:14:50,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660034330] [2023-11-06 22:14:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:50,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:50,058 INFO L87 Difference]: Start difference. First operand 8951 states and 13043 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:15:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:02,762 INFO L93 Difference]: Finished difference Result 26314 states and 40453 transitions. [2023-11-06 22:15:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:15:02,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:15:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:02,806 INFO L225 Difference]: With dead ends: 26314 [2023-11-06 22:15:02,806 INFO L226 Difference]: Without dead ends: 19573 [2023-11-06 22:15:02,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:15:02,820 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1919 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1949 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:02,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1949 Valid, 3067 Invalid, 4046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:15:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19573 states. [2023-11-06 22:15:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19573 to 15304. [2023-11-06 22:15:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 13948 states have (on average 1.4868798394034988) internal successors, (20739), 13999 states have internal predecessors, (20739), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2023-11-06 22:15:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 22943 transitions. [2023-11-06 22:15:07,153 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 22943 transitions. Word has length 190 [2023-11-06 22:15:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:07,153 INFO L495 AbstractCegarLoop]: Abstraction has 15304 states and 22943 transitions. [2023-11-06 22:15:07,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:15:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 22943 transitions. [2023-11-06 22:15:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:15:07,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:07,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:07,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:15:07,161 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:07,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 686864159, now seen corresponding path program 1 times [2023-11-06 22:15:07,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:07,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125774080] [2023-11-06 22:15:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:15:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:15:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:15:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:15:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:15:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125774080] [2023-11-06 22:15:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125774080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:07,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:07,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:15:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513535450] [2023-11-06 22:15:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:07,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:15:07,524 INFO L87 Difference]: Start difference. First operand 15304 states and 22943 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:15:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:26,627 INFO L93 Difference]: Finished difference Result 49289 states and 76739 transitions. [2023-11-06 22:15:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:15:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2023-11-06 22:15:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:26,703 INFO L225 Difference]: With dead ends: 49289 [2023-11-06 22:15:26,703 INFO L226 Difference]: Without dead ends: 36195 [2023-11-06 22:15:26,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:15:26,736 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1918 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:26,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 3067 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3930 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:15:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36195 states. [2023-11-06 22:15:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36195 to 28041. [2023-11-06 22:15:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28041 states, 25757 states have (on average 1.5072019256901037) internal successors, (38821), 25840 states have internal predecessors, (38821), 1625 states have call successors, (1625), 538 states have call predecessors, (1625), 657 states have return successors, (2505), 1726 states have call predecessors, (2505), 1622 states have call successors, (2505) [2023-11-06 22:15:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28041 states to 28041 states and 42951 transitions. [2023-11-06 22:15:36,144 INFO L78 Accepts]: Start accepts. Automaton has 28041 states and 42951 transitions. Word has length 190 [2023-11-06 22:15:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:36,144 INFO L495 AbstractCegarLoop]: Abstraction has 28041 states and 42951 transitions. [2023-11-06 22:15:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2023-11-06 22:15:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 28041 states and 42951 transitions. [2023-11-06 22:15:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-06 22:15:36,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:36,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:36,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:15:36,156 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:36,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1082607455, now seen corresponding path program 1 times [2023-11-06 22:15:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039979357] [2023-11-06 22:15:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:15:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:15:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:15:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:15:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 22:15:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:36,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039979357] [2023-11-06 22:15:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039979357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:36,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:15:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044080940] [2023-11-06 22:15:36,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:36,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:36,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:36,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:36,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:15:36,528 INFO L87 Difference]: Start difference. First operand 28041 states and 42951 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)