./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:07,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:07,129 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:07,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:07,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:07,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:07,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:07,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:07,182 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:07,187 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:07,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:07,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:07,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:07,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:07,193 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:07,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:07,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:07,194 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:07,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:07,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:07,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:07,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:07,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:07,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:07,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:07,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:07,200 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:07,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:07,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:07,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:07,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:07,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:07,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:07,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:07,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:07,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:07,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:07,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:07,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:07,207 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:07,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:07,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:07,208 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_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2023-11-26 10:44:07,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:07,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:07,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:07,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:07,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:07,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2023-11-26 10:44:10,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:11,273 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:11,274 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2023-11-26 10:44:11,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/data/d0af41f64/3cbc9ef9582d4ad6a2552ce3a0476986/FLAG3178a8498 [2023-11-26 10:44:11,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/data/d0af41f64/3cbc9ef9582d4ad6a2552ce3a0476986 [2023-11-26 10:44:11,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:11,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:11,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:11,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:11,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:11,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:11" (1/1) ... [2023-11-26 10:44:11,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a9ccc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:11, skipping insertion in model container [2023-11-26 10:44:11,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:11" (1/1) ... [2023-11-26 10:44:11,421 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:12,184 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_80922979-508b-472c-9ba4-c9e450ada571/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2023-11-26 10:44:12,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:12,214 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:12,225 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2023-11-26 10:44:12,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [66] [2023-11-26 10:44:12,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [432] [2023-11-26 10:44:12,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [481] [2023-11-26 10:44:12,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [588] [2023-11-26 10:44:12,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [855] [2023-11-26 10:44:12,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1930] [2023-11-26 10:44:12,229 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [2204] [2023-11-26 10:44:12,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2236] [2023-11-26 10:44:12,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2637] [2023-11-26 10:44:12,232 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2850] [2023-11-26 10:44:12,368 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_80922979-508b-472c-9ba4-c9e450ada571/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2023-11-26 10:44:12,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:12,401 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:44:12,409 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:12,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12 WrapperNode [2023-11-26 10:44:12,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:12,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:12,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:12,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:12,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,556 INFO L138 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 840 [2023-11-26 10:44:12,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:12,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:12,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:12,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:12,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,576 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,625 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-26 10:44:12,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:12,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:12,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:12,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:12,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (1/1) ... [2023-11-26 10:44:12,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:12,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:12,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:12,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-26 10:44:12,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-26 10:44:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-26 10:44:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-26 10:44:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-26 10:44:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-26 10:44:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-26 10:44:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-26 10:44:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-26 10:44:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-26 10:44:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-26 10:44:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-26 10:44:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 10:44:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-26 10:44:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-26 10:44:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-26 10:44:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-26 10:44:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-26 10:44:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-26 10:44:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-26 10:44:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-26 10:44:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-26 10:44:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-26 10:44:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-26 10:44:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-26 10:44:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-11-26 10:44:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-11-26 10:44:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-26 10:44:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-26 10:44:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-26 10:44:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-26 10:44:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-26 10:44:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-26 10:44:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:44:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:44:12,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:44:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-26 10:44:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-26 10:44:12,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:13,000 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:13,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:13,683 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:13,745 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:13,746 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:44:13,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:13 BoogieIcfgContainer [2023-11-26 10:44:13,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:13,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:13,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:13,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:13,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:11" (1/3) ... [2023-11-26 10:44:13,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc36b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:13, skipping insertion in model container [2023-11-26 10:44:13,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:12" (2/3) ... [2023-11-26 10:44:13,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc36b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:13, skipping insertion in model container [2023-11-26 10:44:13,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:13" (3/3) ... [2023-11-26 10:44:13,756 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2023-11-26 10:44:13,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:13,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:13,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:13,847 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55bd40bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:13,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 199 states have (on average 1.6080402010050252) internal successors, (320), 201 states have internal predecessors, (320), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 10:44:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 10:44:13,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:13,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:44:13,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:13,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1386060010, now seen corresponding path program 1 times [2023-11-26 10:44:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978769627] [2023-11-26 10:44:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:44:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:44:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:44:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:44:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:44:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:44:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:44:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:44:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:44:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:44:14,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:14,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978769627] [2023-11-26 10:44:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978769627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095034929] [2023-11-26 10:44:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:14,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:14,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:14,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:14,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:15,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:44:15,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 10:44:15,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095034929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:15,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-11-26 10:44:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509824249] [2023-11-26 10:44:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:15,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:15,408 INFO L87 Difference]: Start difference. First operand has 256 states, 199 states have (on average 1.6080402010050252) internal successors, (320), 201 states have internal predecessors, (320), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:15,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:15,485 INFO L93 Difference]: Finished difference Result 371 states and 562 transitions. [2023-11-26 10:44:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-11-26 10:44:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:15,502 INFO L225 Difference]: With dead ends: 371 [2023-11-26 10:44:15,503 INFO L226 Difference]: Without dead ends: 253 [2023-11-26 10:44:15,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:15,511 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:15,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-26 10:44:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-11-26 10:44:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5888324873096447) internal successors, (313), 198 states have internal predecessors, (313), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:44:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 388 transitions. [2023-11-26 10:44:15,595 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 388 transitions. Word has length 98 [2023-11-26 10:44:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:15,597 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 388 transitions. [2023-11-26 10:44:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 388 transitions. [2023-11-26 10:44:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-26 10:44:15,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:15,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:44:15,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:15,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:15,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1349726118, now seen corresponding path program 1 times [2023-11-26 10:44:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453033866] [2023-11-26 10:44:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:44:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:44:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 10:44:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 10:44:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:44:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:44:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:44:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:44:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:44:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:44:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:16,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453033866] [2023-11-26 10:44:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453033866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402766979] [2023-11-26 10:44:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:16,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:16,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:44:16,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 10:44:16,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402766979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-26 10:44:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606840715] [2023-11-26 10:44:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:16,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:16,560 INFO L87 Difference]: Start difference. First operand 253 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:16,626 INFO L93 Difference]: Finished difference Result 367 states and 549 transitions. [2023-11-26 10:44:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-11-26 10:44:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:16,631 INFO L225 Difference]: With dead ends: 367 [2023-11-26 10:44:16,631 INFO L226 Difference]: Without dead ends: 255 [2023-11-26 10:44:16,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:16,634 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:16,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 757 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-26 10:44:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-26 10:44:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 200 states have internal predecessors, (315), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:44:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 390 transitions. [2023-11-26 10:44:16,659 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 390 transitions. Word has length 99 [2023-11-26 10:44:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:16,659 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 390 transitions. [2023-11-26 10:44:16,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 390 transitions. [2023-11-26 10:44:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:44:16,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:16,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:44:16,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:16,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:16,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:16,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1592724573, now seen corresponding path program 1 times [2023-11-26 10:44:16,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:16,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976243043] [2023-11-26 10:44:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:44:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:44:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:44:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:44:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:44:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:44:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:44:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:44:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:44:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:44:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976243043] [2023-11-26 10:44:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976243043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:17,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74480948] [2023-11-26 10:44:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:17,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:17,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:17,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:44:17,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 10:44:17,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74480948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:17,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-26 10:44:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209008954] [2023-11-26 10:44:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:17,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:17,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:17,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:17,612 INFO L87 Difference]: Start difference. First operand 255 states and 390 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:17,665 INFO L93 Difference]: Finished difference Result 536 states and 832 transitions. [2023-11-26 10:44:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-11-26 10:44:17,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:17,671 INFO L225 Difference]: With dead ends: 536 [2023-11-26 10:44:17,672 INFO L226 Difference]: Without dead ends: 303 [2023-11-26 10:44:17,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:17,681 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 95 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:17,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 727 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-26 10:44:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 298. [2023-11-26 10:44:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 231 states have (on average 1.593073593073593) internal successors, (368), 232 states have internal predecessors, (368), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-26 10:44:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 465 transitions. [2023-11-26 10:44:17,736 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 465 transitions. Word has length 104 [2023-11-26 10:44:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:17,736 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 465 transitions. [2023-11-26 10:44:17,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 465 transitions. [2023-11-26 10:44:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 10:44:17,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:17,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-26 10:44:17,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:17,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:17,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:17,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -974450773, now seen corresponding path program 1 times [2023-11-26 10:44:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589148624] [2023-11-26 10:44:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:44:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:44:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:44:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:44:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:44:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:44:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:44:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:44:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:44:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:44:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:44:18,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:18,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589148624] [2023-11-26 10:44:18,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589148624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853096870] [2023-11-26 10:44:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:18,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:18,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:18,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:44:18,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:44:18,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:18,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853096870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:18,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-26 10:44:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840133032] [2023-11-26 10:44:18,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:18,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:18,666 INFO L87 Difference]: Start difference. First operand 298 states and 465 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:18,771 INFO L93 Difference]: Finished difference Result 591 states and 924 transitions. [2023-11-26 10:44:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-11-26 10:44:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:18,776 INFO L225 Difference]: With dead ends: 591 [2023-11-26 10:44:18,776 INFO L226 Difference]: Without dead ends: 300 [2023-11-26 10:44:18,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:44:18,782 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 8 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:18,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1469 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-26 10:44:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-26 10:44:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 232 states have (on average 1.5905172413793103) internal successors, (369), 234 states have internal predecessors, (369), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-26 10:44:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 468 transitions. [2023-11-26 10:44:18,814 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 468 transitions. Word has length 105 [2023-11-26 10:44:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:18,817 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 468 transitions. [2023-11-26 10:44:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 468 transitions. [2023-11-26 10:44:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 10:44:18,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:18,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1] [2023-11-26 10:44:18,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:19,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:19,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:19,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1949251539, now seen corresponding path program 1 times [2023-11-26 10:44:19,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:19,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808539913] [2023-11-26 10:44:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:44:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:44:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:44:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:44:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:44:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:44:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:44:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:44:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:44:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:44:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808539913] [2023-11-26 10:44:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808539913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:19,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665678330] [2023-11-26 10:44:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:19,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:19,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:19,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:19,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:19,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:19,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:44:19,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:19,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665678330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:19,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:19,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-26 10:44:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511241320] [2023-11-26 10:44:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:19,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:19,741 INFO L87 Difference]: Start difference. First operand 300 states and 468 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:19,854 INFO L93 Difference]: Finished difference Result 593 states and 929 transitions. [2023-11-26 10:44:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2023-11-26 10:44:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:19,858 INFO L225 Difference]: With dead ends: 593 [2023-11-26 10:44:19,858 INFO L226 Difference]: Without dead ends: 302 [2023-11-26 10:44:19,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:44:19,861 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 8 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:19,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1455 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-26 10:44:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-11-26 10:44:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 233 states have (on average 1.5879828326180256) internal successors, (370), 236 states have internal predecessors, (370), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2023-11-26 10:44:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 474 transitions. [2023-11-26 10:44:19,880 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 474 transitions. Word has length 106 [2023-11-26 10:44:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:19,880 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 474 transitions. [2023-11-26 10:44:19,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 474 transitions. [2023-11-26 10:44:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 10:44:19,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:19,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-26 10:44:19,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:20,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:20,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1732478352, now seen corresponding path program 1 times [2023-11-26 10:44:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022840710] [2023-11-26 10:44:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:44:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:44:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:44:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:44:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:44:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:44:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:44:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:44:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:44:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022840710] [2023-11-26 10:44:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022840710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:20,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:44:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281128516] [2023-11-26 10:44:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:20,402 INFO L87 Difference]: Start difference. First operand 302 states and 474 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:22,135 INFO L93 Difference]: Finished difference Result 636 states and 1004 transitions. [2023-11-26 10:44:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-26 10:44:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:22,140 INFO L225 Difference]: With dead ends: 636 [2023-11-26 10:44:22,140 INFO L226 Difference]: Without dead ends: 353 [2023-11-26 10:44:22,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:22,142 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 620 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:22,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 812 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:44:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-26 10:44:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 302. [2023-11-26 10:44:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 233 states have (on average 1.5879828326180256) internal successors, (370), 236 states have internal predecessors, (370), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-26 10:44:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 473 transitions. [2023-11-26 10:44:22,184 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 473 transitions. Word has length 107 [2023-11-26 10:44:22,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:22,184 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 473 transitions. [2023-11-26 10:44:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 473 transitions. [2023-11-26 10:44:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 10:44:22,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:22,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1] [2023-11-26 10:44:22,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:44:22,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:22,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 833067318, now seen corresponding path program 2 times [2023-11-26 10:44:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:22,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570209055] [2023-11-26 10:44:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:44:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:44:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:44:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:44:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:44:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:44:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:44:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:44:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 10:44:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570209055] [2023-11-26 10:44:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570209055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:22,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:22,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:44:22,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502696780] [2023-11-26 10:44:22,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:44:22,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:44:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:22,490 INFO L87 Difference]: Start difference. First operand 302 states and 473 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:24,034 INFO L93 Difference]: Finished difference Result 638 states and 1007 transitions. [2023-11-26 10:44:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-26 10:44:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:24,040 INFO L225 Difference]: With dead ends: 638 [2023-11-26 10:44:24,040 INFO L226 Difference]: Without dead ends: 355 [2023-11-26 10:44:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:24,042 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 616 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:24,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 812 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:44:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-26 10:44:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 304. [2023-11-26 10:44:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 238 states have internal predecessors, (371), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-26 10:44:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 476 transitions. [2023-11-26 10:44:24,080 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 476 transitions. Word has length 108 [2023-11-26 10:44:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:24,081 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 476 transitions. [2023-11-26 10:44:24,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-26 10:44:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 476 transitions. [2023-11-26 10:44:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-26 10:44:24,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:24,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:24,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:44:24,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:24,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:24,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1171731531, now seen corresponding path program 1 times [2023-11-26 10:44:24,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:24,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163539189] [2023-11-26 10:44:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:24,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:44:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:44:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:44:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:44:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:44:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 10:44:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:44:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:44:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:24,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163539189] [2023-11-26 10:44:24,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163539189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:24,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:24,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:44:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693583076] [2023-11-26 10:44:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:44:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:44:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:24,388 INFO L87 Difference]: Start difference. First operand 304 states and 476 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:44:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:26,528 INFO L93 Difference]: Finished difference Result 636 states and 1002 transitions. [2023-11-26 10:44:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:44:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-26 10:44:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:26,533 INFO L225 Difference]: With dead ends: 636 [2023-11-26 10:44:26,533 INFO L226 Difference]: Without dead ends: 355 [2023-11-26 10:44:26,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:44:26,536 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 625 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:26,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1163 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:44:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-26 10:44:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 304. [2023-11-26 10:44:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 238 states have internal predecessors, (371), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2023-11-26 10:44:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 475 transitions. [2023-11-26 10:44:26,574 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 475 transitions. Word has length 109 [2023-11-26 10:44:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,574 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 475 transitions. [2023-11-26 10:44:26,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:44:26,575 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 475 transitions. [2023-11-26 10:44:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 10:44:26,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-26 10:44:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:44:26,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 637014674, now seen corresponding path program 2 times [2023-11-26 10:44:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377194565] [2023-11-26 10:44:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:44:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:44:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:44:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:44:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:44:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:44:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:44:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:44:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:26,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377194565] [2023-11-26 10:44:26,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377194565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:26,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:26,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-26 10:44:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892045534] [2023-11-26 10:44:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:44:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:44:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:26,897 INFO L87 Difference]: Start difference. First operand 304 states and 475 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:44:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:28,959 INFO L93 Difference]: Finished difference Result 638 states and 1008 transitions. [2023-11-26 10:44:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:44:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 110 [2023-11-26 10:44:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:28,963 INFO L225 Difference]: With dead ends: 638 [2023-11-26 10:44:28,963 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 10:44:28,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:44:28,965 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 621 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:28,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1163 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:44:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 10:44:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 306. [2023-11-26 10:44:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 235 states have (on average 1.5829787234042554) internal successors, (372), 240 states have internal predecessors, (372), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2023-11-26 10:44:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 481 transitions. [2023-11-26 10:44:29,001 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 481 transitions. Word has length 110 [2023-11-26 10:44:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:29,001 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 481 transitions. [2023-11-26 10:44:29,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-26 10:44:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 481 transitions. [2023-11-26 10:44:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-26 10:44:29,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:29,006 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:29,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:44:29,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:29,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1544804454, now seen corresponding path program 1 times [2023-11-26 10:44:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:29,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540225108] [2023-11-26 10:44:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:44:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:44:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:44:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:44:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:44:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:44:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:44:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:29,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540225108] [2023-11-26 10:44:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540225108] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:29,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393797686] [2023-11-26 10:44:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:29,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:29,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:44:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:44:29,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:29,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393797686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:29,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:29,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-11-26 10:44:29,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140140782] [2023-11-26 10:44:29,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:29,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:44:29,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:29,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:44:29,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:29,623 INFO L87 Difference]: Start difference. First operand 306 states and 481 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:44:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:31,213 INFO L93 Difference]: Finished difference Result 779 states and 1293 transitions. [2023-11-26 10:44:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:44:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2023-11-26 10:44:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:31,220 INFO L225 Difference]: With dead ends: 779 [2023-11-26 10:44:31,220 INFO L226 Difference]: Without dead ends: 667 [2023-11-26 10:44:31,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:31,222 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1102 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:31,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:44:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-26 10:44:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 601. [2023-11-26 10:44:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6351931330472103) internal successors, (762), 471 states have internal predecessors, (762), 113 states have call successors, (113), 17 states have call predecessors, (113), 21 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2023-11-26 10:44:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1009 transitions. [2023-11-26 10:44:31,266 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1009 transitions. Word has length 111 [2023-11-26 10:44:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:31,267 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1009 transitions. [2023-11-26 10:44:31,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-26 10:44:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1009 transitions. [2023-11-26 10:44:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-26 10:44:31,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:31,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:31,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:31,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80922979-508b-472c-9ba4-c9e450ada571/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:44:31,480 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:31,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash -392639081, now seen corresponding path program 1 times [2023-11-26 10:44:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:31,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854811352] [2023-11-26 10:44:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:44:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:44:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:44:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:44:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:44:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:44:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854811352] [2023-11-26 10:44:31,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854811352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:31,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:31,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963060538] [2023-11-26 10:44:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:31,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:31,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:31,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:31,638 INFO L87 Difference]: Start difference. First operand 601 states and 1009 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:32,945 INFO L93 Difference]: Finished difference Result 1490 states and 2562 transitions. [2023-11-26 10:44:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:32,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-11-26 10:44:32,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:32,955 INFO L225 Difference]: With dead ends: 1490 [2023-11-26 10:44:32,955 INFO L226 Difference]: Without dead ends: 949 [2023-11-26 10:44:32,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:32,959 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 703 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:32,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 596 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:44:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-26 10:44:33,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 893. [2023-11-26 10:44:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 694 states have (on average 1.6412103746397695) internal successors, (1139), 699 states have internal predecessors, (1139), 177 states have call successors, (177), 17 states have call predecessors, (177), 21 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2023-11-26 10:44:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1524 transitions. [2023-11-26 10:44:33,036 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1524 transitions. Word has length 117 [2023-11-26 10:44:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:33,036 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1524 transitions. [2023-11-26 10:44:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1524 transitions. [2023-11-26 10:44:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-26 10:44:33,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:33,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:44:33,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:33,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -405494380, now seen corresponding path program 1 times [2023-11-26 10:44:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416888250] [2023-11-26 10:44:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:44:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:44:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:44:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:44:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:44:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:44:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:44:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416888250] [2023-11-26 10:44:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416888250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:33,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037259863] [2023-11-26 10:44:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:33,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:33,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:33,169 INFO L87 Difference]: Start difference. First operand 893 states and 1524 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:34,427 INFO L93 Difference]: Finished difference Result 2187 states and 3789 transitions. [2023-11-26 10:44:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:34,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-26 10:44:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:34,439 INFO L225 Difference]: With dead ends: 2187 [2023-11-26 10:44:34,440 INFO L226 Difference]: Without dead ends: 1404 [2023-11-26 10:44:34,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:34,444 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 701 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:34,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 572 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:44:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2023-11-26 10:44:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1348. [2023-11-26 10:44:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1054 states have (on average 1.6442125237191652) internal successors, (1733), 1059 states have internal predecessors, (1733), 272 states have call successors, (272), 17 states have call predecessors, (272), 21 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2023-11-26 10:44:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2308 transitions. [2023-11-26 10:44:34,541 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2308 transitions. Word has length 118 [2023-11-26 10:44:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:34,541 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2308 transitions. [2023-11-26 10:44:34,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2308 transitions. [2023-11-26 10:44:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-26 10:44:34,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:34,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:44:34,555 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1527237017, now seen corresponding path program 1 times [2023-11-26 10:44:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585144277] [2023-11-26 10:44:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:44:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:44:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:44:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:44:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:44:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:44:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:44:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585144277] [2023-11-26 10:44:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585144277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367196826] [2023-11-26 10:44:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:34,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:34,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:34,685 INFO L87 Difference]: Start difference. First operand 1348 states and 2308 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:35,926 INFO L93 Difference]: Finished difference Result 3205 states and 5601 transitions. [2023-11-26 10:44:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:35,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-11-26 10:44:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:35,945 INFO L225 Difference]: With dead ends: 3205 [2023-11-26 10:44:35,945 INFO L226 Difference]: Without dead ends: 2087 [2023-11-26 10:44:35,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:35,952 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 699 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:35,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 570 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-11-26 10:44:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2031. [2023-11-26 10:44:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1614 states have (on average 1.647459727385378) internal successors, (2659), 1619 states have internal predecessors, (2659), 395 states have call successors, (395), 17 states have call predecessors, (395), 21 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2023-11-26 10:44:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3496 transitions. [2023-11-26 10:44:36,101 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3496 transitions. Word has length 119 [2023-11-26 10:44:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:36,101 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 3496 transitions. [2023-11-26 10:44:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3496 transitions. [2023-11-26 10:44:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-26 10:44:36,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:36,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:36,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:44:36,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:36,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1618461717, now seen corresponding path program 1 times [2023-11-26 10:44:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144262211] [2023-11-26 10:44:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:44:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:44:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 10:44:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:44:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:44:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:44:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:44:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144262211] [2023-11-26 10:44:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144262211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:36,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284104794] [2023-11-26 10:44:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:36,246 INFO L87 Difference]: Start difference. First operand 2031 states and 3496 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:37,458 INFO L93 Difference]: Finished difference Result 4775 states and 8406 transitions. [2023-11-26 10:44:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:37,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-11-26 10:44:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:37,487 INFO L225 Difference]: With dead ends: 4775 [2023-11-26 10:44:37,487 INFO L226 Difference]: Without dead ends: 3171 [2023-11-26 10:44:37,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:37,496 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 697 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:37,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 570 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:44:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-26 10:44:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3115. [2023-11-26 10:44:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 2519 states have (on average 1.649464073044859) internal successors, (4155), 2524 states have internal predecessors, (4155), 574 states have call successors, (574), 17 states have call predecessors, (574), 21 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2023-11-26 10:44:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5376 transitions. [2023-11-26 10:44:37,719 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5376 transitions. Word has length 120 [2023-11-26 10:44:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:37,720 INFO L495 AbstractCegarLoop]: Abstraction has 3115 states and 5376 transitions. [2023-11-26 10:44:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5376 transitions. [2023-11-26 10:44:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-26 10:44:37,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:37,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:44:37,742 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:37,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1522970677, now seen corresponding path program 1 times [2023-11-26 10:44:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987578289] [2023-11-26 10:44:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:44:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:44:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:44:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-26 10:44:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:44:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:44:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:44:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987578289] [2023-11-26 10:44:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987578289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:37,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:37,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205917580] [2023-11-26 10:44:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:37,881 INFO L87 Difference]: Start difference. First operand 3115 states and 5376 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:39,185 INFO L93 Difference]: Finished difference Result 7606 states and 13418 transitions. [2023-11-26 10:44:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:39,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-11-26 10:44:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:39,232 INFO L225 Difference]: With dead ends: 7606 [2023-11-26 10:44:39,232 INFO L226 Difference]: Without dead ends: 5141 [2023-11-26 10:44:39,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:39,247 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 695 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:39,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 598 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2023-11-26 10:44:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 5085. [2023-11-26 10:44:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 4113 states have (on average 1.6401653294432288) internal successors, (6746), 4118 states have internal predecessors, (6746), 950 states have call successors, (950), 17 states have call predecessors, (950), 21 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2023-11-26 10:44:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 8763 transitions. [2023-11-26 10:44:39,659 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 8763 transitions. Word has length 121 [2023-11-26 10:44:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:39,660 INFO L495 AbstractCegarLoop]: Abstraction has 5085 states and 8763 transitions. [2023-11-26 10:44:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 8763 transitions. [2023-11-26 10:44:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 10:44:39,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:39,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:39,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:44:39,692 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:39,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1393009287, now seen corresponding path program 1 times [2023-11-26 10:44:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:39,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767234648] [2023-11-26 10:44:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:44:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:44:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:44:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 10:44:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:44:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:44:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:44:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767234648] [2023-11-26 10:44:39,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767234648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:39,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097127524] [2023-11-26 10:44:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:39,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:39,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:39,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:39,833 INFO L87 Difference]: Start difference. First operand 5085 states and 8763 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:41,176 INFO L93 Difference]: Finished difference Result 12587 states and 22166 transitions. [2023-11-26 10:44:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:41,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-26 10:44:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:41,249 INFO L225 Difference]: With dead ends: 12587 [2023-11-26 10:44:41,250 INFO L226 Difference]: Without dead ends: 8518 [2023-11-26 10:44:41,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:41,270 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:41,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 572 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2023-11-26 10:44:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8462. [2023-11-26 10:44:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 6884 states have (on average 1.6369843114468332) internal successors, (11269), 6889 states have internal predecessors, (11269), 1556 states have call successors, (1556), 17 states have call predecessors, (1556), 21 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2023-11-26 10:44:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 14576 transitions. [2023-11-26 10:44:41,820 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 14576 transitions. Word has length 122 [2023-11-26 10:44:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:41,820 INFO L495 AbstractCegarLoop]: Abstraction has 8462 states and 14576 transitions. [2023-11-26 10:44:41,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 14576 transitions. [2023-11-26 10:44:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-26 10:44:41,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:41,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:44:41,857 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1752050153, now seen corresponding path program 1 times [2023-11-26 10:44:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980305994] [2023-11-26 10:44:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:44:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:44:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:44:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:44:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:44:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:44:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:44:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:41,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:41,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980305994] [2023-11-26 10:44:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980305994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:41,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:41,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039776811] [2023-11-26 10:44:41,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:41,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:41,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:41,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:41,983 INFO L87 Difference]: Start difference. First operand 8462 states and 14576 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:43,651 INFO L93 Difference]: Finished difference Result 21939 states and 38565 transitions. [2023-11-26 10:44:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-11-26 10:44:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:43,747 INFO L225 Difference]: With dead ends: 21939 [2023-11-26 10:44:43,747 INFO L226 Difference]: Without dead ends: 14902 [2023-11-26 10:44:43,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:43,778 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 691 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:43,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 584 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14902 states. [2023-11-26 10:44:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14902 to 14846. [2023-11-26 10:44:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14846 states, 12065 states have (on average 1.626688769167012) internal successors, (19626), 12070 states have internal predecessors, (19626), 2759 states have call successors, (2759), 17 states have call predecessors, (2759), 21 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2023-11-26 10:44:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14846 states to 14846 states and 25483 transitions. [2023-11-26 10:44:44,849 INFO L78 Accepts]: Start accepts. Automaton has 14846 states and 25483 transitions. Word has length 123 [2023-11-26 10:44:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:44,850 INFO L495 AbstractCegarLoop]: Abstraction has 14846 states and 25483 transitions. [2023-11-26 10:44:44,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 14846 states and 25483 transitions. [2023-11-26 10:44:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-26 10:44:44,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:44,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:44:44,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:44,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,902 INFO L85 PathProgramCache]: Analyzing trace with hash -245749862, now seen corresponding path program 1 times [2023-11-26 10:44:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345195035] [2023-11-26 10:44:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:44:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:44:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:44:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:44:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:44:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:44:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:44:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345195035] [2023-11-26 10:44:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345195035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:45,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172699543] [2023-11-26 10:44:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:45,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:45,047 INFO L87 Difference]: Start difference. First operand 14846 states and 25483 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:47,128 INFO L93 Difference]: Finished difference Result 39298 states and 68951 transitions. [2023-11-26 10:44:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:47,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-11-26 10:44:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:47,251 INFO L225 Difference]: With dead ends: 39298 [2023-11-26 10:44:47,251 INFO L226 Difference]: Without dead ends: 26469 [2023-11-26 10:44:47,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:47,286 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 689 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:47,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 571 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26469 states. [2023-11-26 10:44:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26469 to 26413. [2023-11-26 10:44:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26413 states, 21593 states have (on average 1.6223313110730329) internal successors, (35031), 21598 states have internal predecessors, (35031), 4798 states have call successors, (4798), 17 states have call predecessors, (4798), 21 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2023-11-26 10:44:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26413 states to 26413 states and 45240 transitions. [2023-11-26 10:44:48,852 INFO L78 Accepts]: Start accepts. Automaton has 26413 states and 45240 transitions. Word has length 124 [2023-11-26 10:44:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:48,853 INFO L495 AbstractCegarLoop]: Abstraction has 26413 states and 45240 transitions. [2023-11-26 10:44:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 26413 states and 45240 transitions. [2023-11-26 10:44:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-26 10:44:48,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:48,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:44:48,895 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:48,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:48,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1344965543, now seen corresponding path program 1 times [2023-11-26 10:44:48,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:48,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353439067] [2023-11-26 10:44:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:44:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:44:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:44:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:44:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:44:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:44:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:44:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:44:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 10:44:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 10:44:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353439067] [2023-11-26 10:44:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353439067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077205936] [2023-11-26 10:44:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:49,031 INFO L87 Difference]: Start difference. First operand 26413 states and 45240 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-26 10:44:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:51,897 INFO L93 Difference]: Finished difference Result 71910 states and 125375 transitions. [2023-11-26 10:44:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-11-26 10:44:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:52,111 INFO L225 Difference]: With dead ends: 71910 [2023-11-26 10:44:52,111 INFO L226 Difference]: Without dead ends: 48229 [2023-11-26 10:44:52,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:52,165 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 687 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:52,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 578 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:44:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48229 states.