./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/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_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/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_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/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 34d763a2f472f3a687bfbf36d5640fefeb493025c54d66615a1e88fff5fbc163 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:05,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:05,708 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:46:05,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:05,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:05,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:05,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:05,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:05,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:05,759 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:05,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:05,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:05,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:05,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:05,763 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:05,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:05,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:05,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:05,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:05,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:05,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:05,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:05,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:05,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:05,768 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:05,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:05,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:05,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:05,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:05,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:05,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:05,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:05,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:05,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:05,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:05,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:05,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:05,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:05,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:05,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:05,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:05,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:05,776 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_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d763a2f472f3a687bfbf36d5640fefeb493025c54d66615a1e88fff5fbc163 [2023-11-26 10:46:06,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:06,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:06,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:06,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:06,093 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:06,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c [2023-11-26 10:46:09,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:09,623 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:09,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c [2023-11-26 10:46:09,653 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/data/ec0137b29/b9bfff469d3c45c79285240cc501d576/FLAGc2edeb3b9 [2023-11-26 10:46:09,666 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/data/ec0137b29/b9bfff469d3c45c79285240cc501d576 [2023-11-26 10:46:09,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:09,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:09,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:09,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:09,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:09,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:09" (1/1) ... [2023-11-26 10:46:09,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4efb7e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:09, skipping insertion in model container [2023-11-26 10:46:09,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:09" (1/1) ... [2023-11-26 10:46:09,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:10,423 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_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c[43803,43816] [2023-11-26 10:46:10,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:10,559 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:10,570 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [48] [2023-11-26 10:46:10,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [125] [2023-11-26 10:46:10,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [444] [2023-11-26 10:46:10,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1512] [2023-11-26 10:46:10,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1926] [2023-11-26 10:46:10,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1961] [2023-11-26 10:46:10,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2098] [2023-11-26 10:46:10,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2107] [2023-11-26 10:46:10,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2124] [2023-11-26 10:46:10,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2343] [2023-11-26 10:46:10,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2740] [2023-11-26 10:46:10,677 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_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c[43803,43816] [2023-11-26 10:46:10,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:10,787 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:46:10,795 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:10,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10 WrapperNode [2023-11-26 10:46:10,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:10,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:10,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:10,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:10,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:10,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:10,939 INFO L138 Inliner]: procedures = 135, calls = 246, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1156 [2023-11-26 10:46:10,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:10,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:10,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:10,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:10,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:10,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:10,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,012 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 10:46:11,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:11,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:11,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:11,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:11,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (1/1) ... [2023-11-26 10:46:11,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:11,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:11,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-26 10:46:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-26 10:46:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-26 10:46:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-26 10:46:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-26 10:46:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-26 10:46:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-26 10:46:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-26 10:46:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-26 10:46:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-26 10:46:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-26 10:46:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-26 10:46:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-26 10:46:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-26 10:46:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-26 10:46:11,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-26 10:46:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-26 10:46:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-26 10:46:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-26 10:46:11,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-26 10:46:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-26 10:46:11,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-26 10:46:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-26 10:46:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-26 10:46:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 10:46:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-26 10:46:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-26 10:46:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-26 10:46:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-26 10:46:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-26 10:46:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-26 10:46:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-26 10:46:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-26 10:46:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-26 10:46:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-26 10:46:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-26 10:46:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-26 10:46:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-26 10:46:11,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-26 10:46:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-26 10:46:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-26 10:46:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-26 10:46:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-26 10:46:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2023-11-26 10:46:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2023-11-26 10:46:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-26 10:46:11,238 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-26 10:46:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-26 10:46:11,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-26 10:46:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-26 10:46:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-26 10:46:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-26 10:46:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-26 10:46:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-26 10:46:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-26 10:46:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:46:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:46:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:46:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:46:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-26 10:46:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-26 10:46:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-26 10:46:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-26 10:46:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:11,545 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:11,549 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:12,701 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:12,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:12,808 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:46:12,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:12 BoogieIcfgContainer [2023-11-26 10:46:12,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:12,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:12,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:12,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:12,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:09" (1/3) ... [2023-11-26 10:46:12,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2c0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:12, skipping insertion in model container [2023-11-26 10:46:12,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:10" (2/3) ... [2023-11-26 10:46:12,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba2c0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:12, skipping insertion in model container [2023-11-26 10:46:12,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:12" (3/3) ... [2023-11-26 10:46:12,821 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product34.cil.c [2023-11-26 10:46:12,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:12,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:46:12,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:12,941 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;@4aca47ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:12,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:46:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 425 states, 318 states have (on average 1.5880503144654088) internal successors, (505), 325 states have internal predecessors, (505), 76 states have call successors, (76), 29 states have call predecessors, (76), 29 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-26 10:46:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-26 10:46:12,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:13,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:13,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:13,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 547178020, now seen corresponding path program 1 times [2023-11-26 10:46:13,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:13,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564985350] [2023-11-26 10:46:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:13,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 10:46:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:46:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:46:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:46:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:46:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:46:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:46:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:46:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:46:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:46:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 10:46:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:46:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:46:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 10:46:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-26 10:46:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564985350] [2023-11-26 10:46:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564985350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706133187] [2023-11-26 10:46:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:14,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:14,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:14,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:46:14,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-26 10:46:14,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:14,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706133187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:14,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:14,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-26 10:46:14,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824795423] [2023-11-26 10:46:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:14,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:46:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:46:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:14,714 INFO L87 Difference]: Start difference. First operand has 425 states, 318 states have (on average 1.5880503144654088) internal successors, (505), 325 states have internal predecessors, (505), 76 states have call successors, (76), 29 states have call predecessors, (76), 29 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:14,902 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2023-11-26 10:46:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:46:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 150 [2023-11-26 10:46:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:14,922 INFO L225 Difference]: With dead ends: 665 [2023-11-26 10:46:14,922 INFO L226 Difference]: Without dead ends: 421 [2023-11-26 10:46:14,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 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 10:46:14,934 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:14,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-26 10:46:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2023-11-26 10:46:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 316 states have (on average 1.5759493670886076) internal successors, (498), 321 states have internal predecessors, (498), 76 states have call successors, (76), 29 states have call predecessors, (76), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-26 10:46:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 647 transitions. [2023-11-26 10:46:15,072 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 647 transitions. Word has length 150 [2023-11-26 10:46:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:15,074 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 647 transitions. [2023-11-26 10:46:15,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 647 transitions. [2023-11-26 10:46:15,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-26 10:46:15,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:15,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:15,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:15,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:46:15,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 571828560, now seen corresponding path program 1 times [2023-11-26 10:46:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370328524] [2023-11-26 10:46:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 10:46:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:46:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 10:46:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:46:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:46:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-26 10:46:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:46:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 10:46:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:46:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:46:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-26 10:46:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 10:46:15,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370328524] [2023-11-26 10:46:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370328524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16231682] [2023-11-26 10:46:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:15,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:15,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:15,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:15,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:46:16,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:46:16,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16231682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:16,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-26 10:46:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626963391] [2023-11-26 10:46:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:16,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:16,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:16,262 INFO L87 Difference]: Start difference. First operand 421 states and 647 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:16,346 INFO L93 Difference]: Finished difference Result 660 states and 993 transitions. [2023-11-26 10:46:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2023-11-26 10:46:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:16,353 INFO L225 Difference]: With dead ends: 660 [2023-11-26 10:46:16,353 INFO L226 Difference]: Without dead ends: 423 [2023-11-26 10:46:16,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:16,357 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 0 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:16,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1257 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-26 10:46:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2023-11-26 10:46:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 318 states have (on average 1.5723270440251573) internal successors, (500), 323 states have internal predecessors, (500), 76 states have call successors, (76), 29 states have call predecessors, (76), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-26 10:46:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 649 transitions. [2023-11-26 10:46:16,402 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 649 transitions. Word has length 133 [2023-11-26 10:46:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:16,403 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 649 transitions. [2023-11-26 10:46:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 649 transitions. [2023-11-26 10:46:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-26 10:46:16,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:16,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:16,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:16,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:16,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:16,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -410487617, now seen corresponding path program 1 times [2023-11-26 10:46:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595995590] [2023-11-26 10:46:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 10:46:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:46:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:46:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:46:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:46:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:46:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:46:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 10:46:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 10:46:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-26 10:46:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-26 10:46:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:46:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:46:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595995590] [2023-11-26 10:46:16,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595995590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:16,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111262870] [2023-11-26 10:46:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:16,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:16,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:16,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:17,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:46:17,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 10:46:17,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111262870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:17,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-26 10:46:17,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927277861] [2023-11-26 10:46:17,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:17,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:17,375 INFO L87 Difference]: Start difference. First operand 423 states and 649 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:17,464 INFO L93 Difference]: Finished difference Result 894 states and 1390 transitions. [2023-11-26 10:46:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:17,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 138 [2023-11-26 10:46:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:17,469 INFO L225 Difference]: With dead ends: 894 [2023-11-26 10:46:17,469 INFO L226 Difference]: Without dead ends: 493 [2023-11-26 10:46:17,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:17,472 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 129 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:17,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1211 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:46:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-26 10:46:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 488. [2023-11-26 10:46:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 369 states have (on average 1.5907859078590787) internal successors, (587), 374 states have internal predecessors, (587), 90 states have call successors, (90), 29 states have call predecessors, (90), 28 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-26 10:46:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 764 transitions. [2023-11-26 10:46:17,500 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 764 transitions. Word has length 138 [2023-11-26 10:46:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:17,501 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 764 transitions. [2023-11-26 10:46:17,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 764 transitions. [2023-11-26 10:46:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-26 10:46:17,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:17,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:17,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:17,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:17,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:17,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2094945167, now seen corresponding path program 1 times [2023-11-26 10:46:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476763364] [2023-11-26 10:46:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:17,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 10:46:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 10:46:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 10:46:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 10:46:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:46:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:46:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 10:46:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:46:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 10:46:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:46:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 10:46:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:46:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:46:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 10:46:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 10:46:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-26 10:46:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-26 10:46:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 10:46:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:18,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476763364] [2023-11-26 10:46:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476763364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637759007] [2023-11-26 10:46:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:18,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:18,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:18,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:46:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:18,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:46:18,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:46:18,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637759007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-26 10:46:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707818785] [2023-11-26 10:46:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:18,586 INFO L87 Difference]: Start difference. First operand 488 states and 764 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-26 10:46:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:18,720 INFO L93 Difference]: Finished difference Result 971 states and 1522 transitions. [2023-11-26 10:46:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 157 [2023-11-26 10:46:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:18,726 INFO L225 Difference]: With dead ends: 971 [2023-11-26 10:46:18,726 INFO L226 Difference]: Without dead ends: 490 [2023-11-26 10:46:18,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:46:18,730 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 8 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:18,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2469 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-26 10:46:18,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2023-11-26 10:46:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 370 states have (on average 1.5891891891891892) internal successors, (588), 376 states have internal predecessors, (588), 90 states have call successors, (90), 29 states have call predecessors, (90), 29 states have return successors, (89), 86 states have call predecessors, (89), 87 states have call successors, (89) [2023-11-26 10:46:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 767 transitions. [2023-11-26 10:46:18,758 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 767 transitions. Word has length 157 [2023-11-26 10:46:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:18,758 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 767 transitions. [2023-11-26 10:46:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-26 10:46:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 767 transitions. [2023-11-26 10:46:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-26 10:46:18,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:18,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:18,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:18,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:18,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1239888714, now seen corresponding path program 1 times [2023-11-26 10:46:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:18,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504187601] [2023-11-26 10:46:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:46:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:46:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 10:46:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:46:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:46:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 10:46:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 10:46:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:46:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:46:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:46:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:46:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:46:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:46:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:46:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:46:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-26 10:46:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-26 10:46:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504187601] [2023-11-26 10:46:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504187601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221725368] [2023-11-26 10:46:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:19,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:19,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:19,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:46:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:19,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:46:19,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:46:19,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:19,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221725368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:19,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:19,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-26 10:46:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48759934] [2023-11-26 10:46:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:46:19,810 INFO L87 Difference]: Start difference. First operand 490 states and 767 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-26 10:46:19,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:19,962 INFO L93 Difference]: Finished difference Result 973 states and 1527 transitions. [2023-11-26 10:46:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:19,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 158 [2023-11-26 10:46:19,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:19,967 INFO L225 Difference]: With dead ends: 973 [2023-11-26 10:46:19,967 INFO L226 Difference]: Without dead ends: 492 [2023-11-26 10:46:19,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:46:19,970 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 8 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:19,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2455 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:46:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-26 10:46:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2023-11-26 10:46:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 371 states have (on average 1.587601078167116) internal successors, (589), 378 states have internal predecessors, (589), 90 states have call successors, (90), 29 states have call predecessors, (90), 30 states have return successors, (94), 86 states have call predecessors, (94), 87 states have call successors, (94) [2023-11-26 10:46:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 773 transitions. [2023-11-26 10:46:20,005 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 773 transitions. Word has length 158 [2023-11-26 10:46:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:20,006 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 773 transitions. [2023-11-26 10:46:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-26 10:46:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 773 transitions. [2023-11-26 10:46:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 10:46:20,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:20,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:20,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 10:46:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:20,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:20,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1883008459, now seen corresponding path program 1 times [2023-11-26 10:46:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245987144] [2023-11-26 10:46:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 10:46:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:46:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 10:46:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:46:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 10:46:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-26 10:46:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-26 10:46:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:46:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:46:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-26 10:46:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-26 10:46:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:46:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-26 10:46:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:46:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245987144] [2023-11-26 10:46:20,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245987144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:20,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:20,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:46:20,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923294408] [2023-11-26 10:46:20,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:20,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:20,584 INFO L87 Difference]: Start difference. First operand 492 states and 773 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:46:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:24,107 INFO L93 Difference]: Finished difference Result 1135 states and 1816 transitions. [2023-11-26 10:46:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:46:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2023-11-26 10:46:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:24,116 INFO L225 Difference]: With dead ends: 1135 [2023-11-26 10:46:24,116 INFO L226 Difference]: Without dead ends: 662 [2023-11-26 10:46:24,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:46:24,122 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1443 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 3850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:24,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 1193 Invalid, 3850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [552 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 10:46:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-26 10:46:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 492. [2023-11-26 10:46:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 371 states have (on average 1.587601078167116) internal successors, (589), 378 states have internal predecessors, (589), 90 states have call successors, (90), 29 states have call predecessors, (90), 30 states have return successors, (93), 86 states have call predecessors, (93), 87 states have call successors, (93) [2023-11-26 10:46:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 772 transitions. [2023-11-26 10:46:24,214 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 772 transitions. Word has length 141 [2023-11-26 10:46:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:24,217 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 772 transitions. [2023-11-26 10:46:24,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:46:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 772 transitions. [2023-11-26 10:46:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:46:24,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:24,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:24,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:24,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:24,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash 587863374, now seen corresponding path program 2 times [2023-11-26 10:46:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:24,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754502191] [2023-11-26 10:46:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 10:46:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 10:46:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 10:46:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:46:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 10:46:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:46:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:46:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 10:46:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:46:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:46:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:46:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 10:46:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 10:46:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 10:46:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754502191] [2023-11-26 10:46:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754502191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:24,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:46:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645370939] [2023-11-26 10:46:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:24,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:46:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:46:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:46:24,545 INFO L87 Difference]: Start difference. First operand 492 states and 772 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:46:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:28,018 INFO L93 Difference]: Finished difference Result 1137 states and 1819 transitions. [2023-11-26 10:46:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:46:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2023-11-26 10:46:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:28,026 INFO L225 Difference]: With dead ends: 1137 [2023-11-26 10:46:28,026 INFO L226 Difference]: Without dead ends: 664 [2023-11-26 10:46:28,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:46:28,029 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1433 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:28,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1194 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 10:46:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-26 10:46:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 494. [2023-11-26 10:46:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 372 states have (on average 1.586021505376344) internal successors, (590), 380 states have internal predecessors, (590), 90 states have call successors, (90), 29 states have call predecessors, (90), 31 states have return successors, (95), 86 states have call predecessors, (95), 87 states have call successors, (95) [2023-11-26 10:46:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 775 transitions. [2023-11-26 10:46:28,083 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 775 transitions. Word has length 142 [2023-11-26 10:46:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:28,083 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 775 transitions. [2023-11-26 10:46:28,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-26 10:46:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 775 transitions. [2023-11-26 10:46:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-26 10:46:28,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:28,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:28,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:46:28,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:28,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash 52038810, now seen corresponding path program 1 times [2023-11-26 10:46:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875431382] [2023-11-26 10:46:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 10:46:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 10:46:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:46:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:46:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:46:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 10:46:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 10:46:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:46:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 10:46:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:46:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-26 10:46:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-26 10:46:28,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:28,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875431382] [2023-11-26 10:46:28,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875431382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:28,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 10:46:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453047125] [2023-11-26 10:46:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:46:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:46:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:28,451 INFO L87 Difference]: Start difference. First operand 494 states and 775 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 10:46:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:33,183 INFO L93 Difference]: Finished difference Result 1135 states and 1814 transitions. [2023-11-26 10:46:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:33,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 143 [2023-11-26 10:46:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:33,192 INFO L225 Difference]: With dead ends: 1135 [2023-11-26 10:46:33,192 INFO L226 Difference]: Without dead ends: 664 [2023-11-26 10:46:33,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:46:33,197 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1443 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 5503 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 6066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:33,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 1653 Invalid, 6066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 5503 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-26 10:46:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-26 10:46:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 494. [2023-11-26 10:46:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 372 states have (on average 1.586021505376344) internal successors, (590), 380 states have internal predecessors, (590), 90 states have call successors, (90), 29 states have call predecessors, (90), 31 states have return successors, (94), 86 states have call predecessors, (94), 87 states have call successors, (94) [2023-11-26 10:46:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 774 transitions. [2023-11-26 10:46:33,258 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 774 transitions. Word has length 143 [2023-11-26 10:46:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:33,259 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 774 transitions. [2023-11-26 10:46:33,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-26 10:46:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 774 transitions. [2023-11-26 10:46:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-26 10:46:33,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:33,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:33,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:46:33,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:33,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -515094665, now seen corresponding path program 1 times [2023-11-26 10:46:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858683373] [2023-11-26 10:46:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:33,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 10:46:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 10:46:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:46:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:46:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:46:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 10:46:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:46:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:46:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-26 10:46:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-26 10:46:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-26 10:46:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-26 10:46:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-26 10:46:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-26 10:46:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:33,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858683373] [2023-11-26 10:46:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858683373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:33,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:33,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 10:46:33,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113826] [2023-11-26 10:46:33,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:33,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:46:33,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:33,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:46:33,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:33,684 INFO L87 Difference]: Start difference. First operand 494 states and 774 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 10:46:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:38,362 INFO L93 Difference]: Finished difference Result 1137 states and 1820 transitions. [2023-11-26 10:46:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 162 [2023-11-26 10:46:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:38,370 INFO L225 Difference]: With dead ends: 1137 [2023-11-26 10:46:38,371 INFO L226 Difference]: Without dead ends: 666 [2023-11-26 10:46:38,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-26 10:46:38,374 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1441 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 5582 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 5582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:38,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1653 Invalid, 6133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [551 Valid, 5582 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-26 10:46:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-26 10:46:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 496. [2023-11-26 10:46:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 373 states have (on average 1.584450402144772) internal successors, (591), 382 states have internal predecessors, (591), 90 states have call successors, (90), 29 states have call predecessors, (90), 32 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2023-11-26 10:46:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 780 transitions. [2023-11-26 10:46:38,430 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 780 transitions. Word has length 162 [2023-11-26 10:46:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:38,430 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 780 transitions. [2023-11-26 10:46:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 10:46:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 780 transitions. [2023-11-26 10:46:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-26 10:46:38,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:38,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:38,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:46:38,435 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:38,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1001891967, now seen corresponding path program 1 times [2023-11-26 10:46:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:38,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58403654] [2023-11-26 10:46:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:38,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:46:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:46:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:46:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:46:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:46:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:46:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-26 10:46:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-26 10:46:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-26 10:46:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:46:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-26 10:46:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58403654] [2023-11-26 10:46:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58403654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816787546] [2023-11-26 10:46:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:38,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:38,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:38,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:46:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:39,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:46:39,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:39,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816787546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:39,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-11-26 10:46:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56862113] [2023-11-26 10:46:39,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:46:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:46:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:46:39,260 INFO L87 Difference]: Start difference. First operand 496 states and 780 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-26 10:46:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:42,017 INFO L93 Difference]: Finished difference Result 1323 states and 2197 transitions. [2023-11-26 10:46:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:46:42,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 145 [2023-11-26 10:46:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:42,029 INFO L225 Difference]: With dead ends: 1323 [2023-11-26 10:46:42,029 INFO L226 Difference]: Without dead ends: 1086 [2023-11-26 10:46:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:46:42,032 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1983 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:42,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 1516 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:46:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-11-26 10:46:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 901. [2023-11-26 10:46:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 699 states have (on average 1.6466380543633763) internal successors, (1151), 708 states have internal predecessors, (1151), 169 states have call successors, (169), 29 states have call predecessors, (169), 32 states have return successors, (188), 165 states have call predecessors, (188), 166 states have call successors, (188) [2023-11-26 10:46:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1508 transitions. [2023-11-26 10:46:42,109 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1508 transitions. Word has length 145 [2023-11-26 10:46:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:42,111 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1508 transitions. [2023-11-26 10:46:42,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-26 10:46:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1508 transitions. [2023-11-26 10:46:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-26 10:46:42,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:42,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:42,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 10:46:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a92ed26-3cdb-40dd-8da4-9d2e253cb7e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:46:42,325 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1647980658, now seen corresponding path program 1 times [2023-11-26 10:46:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187037931] [2023-11-26 10:46:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:46:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:46:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 10:46:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:46:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-26 10:46:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 10:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-26 10:46:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:46:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:46:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-26 10:46:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-26 10:46:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-26 10:46:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-26 10:46:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-26 10:46:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-26 10:46:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 10:46:42,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:42,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187037931] [2023-11-26 10:46:42,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187037931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:42,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387198687] [2023-11-26 10:46:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:42,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:42,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:42,518 INFO L87 Difference]: Start difference. First operand 901 states and 1508 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:45,111 INFO L93 Difference]: Finished difference Result 2319 states and 3976 transitions. [2023-11-26 10:46:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 169 [2023-11-26 10:46:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:45,127 INFO L225 Difference]: With dead ends: 2319 [2023-11-26 10:46:45,127 INFO L226 Difference]: Without dead ends: 1478 [2023-11-26 10:46:45,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:46:45,133 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1554 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:45,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 917 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:46:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-26 10:46:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1303. [2023-11-26 10:46:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1022 states have (on average 1.6614481409001958) internal successors, (1698), 1031 states have internal predecessors, (1698), 248 states have call successors, (248), 29 states have call predecessors, (248), 32 states have return successors, (277), 244 states have call predecessors, (277), 245 states have call successors, (277) [2023-11-26 10:46:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2223 transitions. [2023-11-26 10:46:45,237 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2223 transitions. Word has length 169 [2023-11-26 10:46:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:45,237 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2223 transitions. [2023-11-26 10:46:45,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2223 transitions. [2023-11-26 10:46:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-26 10:46:45,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:45,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:46:45,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1159762983, now seen corresponding path program 1 times [2023-11-26 10:46:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494308173] [2023-11-26 10:46:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-26 10:46:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 10:46:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-26 10:46:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-26 10:46:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:46:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:46:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-26 10:46:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-26 10:46:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-26 10:46:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-26 10:46:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-26 10:46:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-26 10:46:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 10:46:45,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:45,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494308173] [2023-11-26 10:46:45,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494308173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:45,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:45,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414808505] [2023-11-26 10:46:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:45,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:45,405 INFO L87 Difference]: Start difference. First operand 1303 states and 2223 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:47,911 INFO L93 Difference]: Finished difference Result 3302 states and 5723 transitions. [2023-11-26 10:46:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:47,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2023-11-26 10:46:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:47,930 INFO L225 Difference]: With dead ends: 3302 [2023-11-26 10:46:47,931 INFO L226 Difference]: Without dead ends: 2109 [2023-11-26 10:46:47,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:46:47,938 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1557 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:47,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 886 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 10:46:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2023-11-26 10:46:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1934. [2023-11-26 10:46:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1534 states have (on average 1.6714471968709257) internal successors, (2564), 1543 states have internal predecessors, (2564), 367 states have call successors, (367), 29 states have call predecessors, (367), 32 states have return successors, (396), 363 states have call predecessors, (396), 364 states have call successors, (396) [2023-11-26 10:46:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3327 transitions. [2023-11-26 10:46:48,125 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3327 transitions. Word has length 152 [2023-11-26 10:46:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:48,125 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3327 transitions. [2023-11-26 10:46:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-26 10:46:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3327 transitions. [2023-11-26 10:46:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-26 10:46:48,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:48,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:48,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:46:48,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:48,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:48,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1288616820, now seen corresponding path program 1 times [2023-11-26 10:46:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:48,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976428979] [2023-11-26 10:46:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 10:46:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-26 10:46:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 10:46:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 10:46:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-26 10:46:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 10:46:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-26 10:46:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-26 10:46:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-26 10:46:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 10:46:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-26 10:46:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-26 10:46:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-26 10:46:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-26 10:46:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-26 10:46:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 10:46:48,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:48,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976428979] [2023-11-26 10:46:48,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976428979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:48,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053391802] [2023-11-26 10:46:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:48,339 INFO L87 Difference]: Start difference. First operand 1934 states and 3327 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:50,833 INFO L93 Difference]: Finished difference Result 4782 states and 8375 transitions. [2023-11-26 10:46:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:46:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 171 [2023-11-26 10:46:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:50,858 INFO L225 Difference]: With dead ends: 4782 [2023-11-26 10:46:50,858 INFO L226 Difference]: Without dead ends: 3078 [2023-11-26 10:46:50,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:46:50,866 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1552 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:50,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 878 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 10:46:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2023-11-26 10:46:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 2903. [2023-11-26 10:46:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2341 states have (on average 1.6796240922682615) internal successors, (3932), 2350 states have internal predecessors, (3932), 529 states have call successors, (529), 29 states have call predecessors, (529), 32 states have return successors, (574), 525 states have call predecessors, (574), 526 states have call successors, (574) [2023-11-26 10:46:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 5035 transitions. [2023-11-26 10:46:51,042 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 5035 transitions. Word has length 171 [2023-11-26 10:46:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:51,043 INFO L495 AbstractCegarLoop]: Abstraction has 2903 states and 5035 transitions. [2023-11-26 10:46:51,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-26 10:46:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 5035 transitions. [2023-11-26 10:46:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-26 10:46:51,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:51,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:46:51,064 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1209235120, now seen corresponding path program 1 times [2023-11-26 10:46:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889119310] [2023-11-26 10:46:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:46:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:46:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:46:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:46:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 10:46:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:46:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 10:46:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 10:46:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-26 10:46:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-26 10:46:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 10:46:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-26 10:46:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 10:46:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-26 10:46:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-26 10:46:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-26 10:46:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-26 10:46:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-26 10:46:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-26 10:46:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-26 10:46:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-26 10:46:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 10:46:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889119310] [2023-11-26 10:46:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889119310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:46:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317491897] [2023-11-26 10:46:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:51,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:46:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:46:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:46:51,223 INFO L87 Difference]: Start difference. First operand 2903 states and 5035 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)