./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/echo-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/echo-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7b9d160710101b215c964c6b554481c6d0fe313b4fcd66834ad56abb2a0f8efe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:03,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:04,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:36:04,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:04,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:04,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:04,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:04,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:04,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:04,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:04,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:04,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:04,143 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:04,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:04,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:04,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:04,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:04,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:04,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:04,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:04,147 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:36:04,148 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:04,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:04,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:04,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:04,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:04,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:04,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:04,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:04,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:04,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:04,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:04,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:04,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:04,154 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:04,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:04,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:04,155 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:04,155 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_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b9d160710101b215c964c6b554481c6d0fe313b4fcd66834ad56abb2a0f8efe [2023-11-19 07:36:04,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:04,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:04,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:04,500 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:04,501 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:04,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/echo-2.i [2023-11-19 07:36:07,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:08,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:08,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/sv-benchmarks/c/busybox-1.22.0/echo-2.i [2023-11-19 07:36:08,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/data/a805a698a/2d20e8943b5442aba43a65b3ffa532a9/FLAG06bf2c37a [2023-11-19 07:36:08,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/data/a805a698a/2d20e8943b5442aba43a65b3ffa532a9 [2023-11-19 07:36:08,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:08,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:08,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:08,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:08,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:08,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:08" (1/1) ... [2023-11-19 07:36:08,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3733804a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:08, skipping insertion in model container [2023-11-19 07:36:08,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:08" (1/1) ... [2023-11-19 07:36:08,321 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:09,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:09,801 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:09,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:10,227 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:10,228 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:10,239 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:10,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10 WrapperNode [2023-11-19 07:36:10,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:10,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:10,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:10,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:10,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,394 INFO L138 Inliner]: procedures = 599, calls = 218, calls flagged for inlining = 17, calls inlined = 15, statements flattened = 803 [2023-11-19 07:36:10,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:10,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:10,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:10,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:10,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:10,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:10,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:10,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:10,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (1/1) ... [2023-11-19 07:36:10,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:10,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:10,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:36:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:36:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:36:10,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:36:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:36:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:36:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:36:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:36:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:36:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:36:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:36:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:36:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:36:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:36:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:36:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:36:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure full_write [2023-11-19 07:36:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure full_write [2023-11-19 07:36:10,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:11,073 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:11,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:12,018 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:12,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:12,030 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-11-19 07:36:12,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:12 BoogieIcfgContainer [2023-11-19 07:36:12,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:12,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:12,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:12,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:12,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:08" (1/3) ... [2023-11-19 07:36:12,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279ee695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:12, skipping insertion in model container [2023-11-19 07:36:12,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:10" (2/3) ... [2023-11-19 07:36:12,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279ee695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:12, skipping insertion in model container [2023-11-19 07:36:12,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:12" (3/3) ... [2023-11-19 07:36:12,046 INFO L112 eAbstractionObserver]: Analyzing ICFG echo-2.i [2023-11-19 07:36:12,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:12,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-19 07:36:12,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:12,134 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;@77685560, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:12,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-19 07:36:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 182 states have (on average 1.7197802197802199) internal successors, (313), 226 states have internal predecessors, (313), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:36:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:36:12,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:12,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:12,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:12,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash 9545285, now seen corresponding path program 1 times [2023-11-19 07:36:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541136416] [2023-11-19 07:36:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:12,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541136416] [2023-11-19 07:36:12,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541136416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:12,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:12,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175660482] [2023-11-19 07:36:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:12,841 INFO L87 Difference]: Start difference. First operand has 242 states, 182 states have (on average 1.7197802197802199) internal successors, (313), 226 states have internal predecessors, (313), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:12,934 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2023-11-19 07:36:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:36:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:12,949 INFO L225 Difference]: With dead ends: 477 [2023-11-19 07:36:12,949 INFO L226 Difference]: Without dead ends: 235 [2023-11-19 07:36:12,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:12,960 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:12,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 594 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-19 07:36:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-11-19 07:36:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 180 states have (on average 1.5555555555555556) internal successors, (280), 220 states have internal predecessors, (280), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 301 transitions. [2023-11-19 07:36:13,024 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 301 transitions. Word has length 4 [2023-11-19 07:36:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:13,024 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 301 transitions. [2023-11-19 07:36:13,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 301 transitions. [2023-11-19 07:36:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:36:13,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:13,026 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:36:13,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:13,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:13,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash 896066467, now seen corresponding path program 1 times [2023-11-19 07:36:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:13,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888528388] [2023-11-19 07:36:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:13,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:13,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888528388] [2023-11-19 07:36:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888528388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316398891] [2023-11-19 07:36:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:13,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:13,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:13,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:13,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:13,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316398891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:13,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:36:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432673686] [2023-11-19 07:36:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:13,534 INFO L87 Difference]: Start difference. First operand 235 states and 301 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:13,607 INFO L93 Difference]: Finished difference Result 235 states and 301 transitions. [2023-11-19 07:36:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:36:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:13,614 INFO L225 Difference]: With dead ends: 235 [2023-11-19 07:36:13,614 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 07:36:13,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:13,620 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 3 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:13,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 872 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 07:36:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-19 07:36:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 180 states have (on average 1.55) internal successors, (279), 219 states have internal predecessors, (279), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 300 transitions. [2023-11-19 07:36:13,641 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 300 transitions. Word has length 7 [2023-11-19 07:36:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:13,641 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 300 transitions. [2023-11-19 07:36:13,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 300 transitions. [2023-11-19 07:36:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:36:13,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:13,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:36:13,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:13,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:13,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:13,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2008257026, now seen corresponding path program 1 times [2023-11-19 07:36:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936654536] [2023-11-19 07:36:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:14,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936654536] [2023-11-19 07:36:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936654536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:14,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:14,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901243659] [2023-11-19 07:36:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:14,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:14,040 INFO L87 Difference]: Start difference. First operand 234 states and 300 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:14,072 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2023-11-19 07:36:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:36:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:14,075 INFO L225 Difference]: With dead ends: 234 [2023-11-19 07:36:14,076 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 07:36:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:14,087 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 0 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:14,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 583 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 07:36:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2023-11-19 07:36:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 178 states have (on average 1.550561797752809) internal successors, (276), 216 states have internal predecessors, (276), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 297 transitions. [2023-11-19 07:36:14,116 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 297 transitions. Word has length 8 [2023-11-19 07:36:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 297 transitions. [2023-11-19 07:36:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 297 transitions. [2023-11-19 07:36:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:36:14,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:14,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:14,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1885863143, now seen corresponding path program 1 times [2023-11-19 07:36:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056195591] [2023-11-19 07:36:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056195591] [2023-11-19 07:36:14,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056195591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:14,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909409708] [2023-11-19 07:36:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:14,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:14,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:36:14,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:14,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909409708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:14,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 07:36:14,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495605928] [2023-11-19 07:36:14,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:14,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:14,621 INFO L87 Difference]: Start difference. First operand 231 states and 297 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:14,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:14,656 INFO L93 Difference]: Finished difference Result 231 states and 297 transitions. [2023-11-19 07:36:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 07:36:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:14,659 INFO L225 Difference]: With dead ends: 231 [2023-11-19 07:36:14,659 INFO L226 Difference]: Without dead ends: 229 [2023-11-19 07:36:14,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:14,660 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 123 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:14,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 450 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:14,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-19 07:36:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-19 07:36:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 178 states have (on average 1.5393258426966292) internal successors, (274), 214 states have internal predecessors, (274), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 295 transitions. [2023-11-19 07:36:14,675 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 295 transitions. Word has length 13 [2023-11-19 07:36:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:14,676 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 295 transitions. [2023-11-19 07:36:14,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 295 transitions. [2023-11-19 07:36:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:36:14,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:14,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:14,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:14,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:14,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:14,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1667785045, now seen corresponding path program 1 times [2023-11-19 07:36:14,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:14,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135251931] [2023-11-19 07:36:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:36:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135251931] [2023-11-19 07:36:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135251931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340634792] [2023-11-19 07:36:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:15,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:15,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:15,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:15,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:15,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:15,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:15,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340634792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:15,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:36:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865196387] [2023-11-19 07:36:15,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:15,357 INFO L87 Difference]: Start difference. First operand 229 states and 295 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:15,420 INFO L93 Difference]: Finished difference Result 461 states and 595 transitions. [2023-11-19 07:36:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 07:36:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:15,423 INFO L225 Difference]: With dead ends: 461 [2023-11-19 07:36:15,423 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 07:36:15,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:15,426 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 4 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:15,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1443 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 07:36:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-19 07:36:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 187 states have (on average 1.5133689839572193) internal successors, (283), 223 states have internal predecessors, (283), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 304 transitions. [2023-11-19 07:36:15,440 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 304 transitions. Word has length 14 [2023-11-19 07:36:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:15,440 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 304 transitions. [2023-11-19 07:36:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 304 transitions. [2023-11-19 07:36:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:36:15,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:15,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:15,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:36:15,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:15,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:15,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 171027955, now seen corresponding path program 2 times [2023-11-19 07:36:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677002562] [2023-11-19 07:36:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677002562] [2023-11-19 07:36:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677002562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110187513] [2023-11-19 07:36:16,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:16,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:16,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:16,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:16,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:16,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:16,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:16,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:36:16,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110187513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:16,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:36:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685722931] [2023-11-19 07:36:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:16,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:16,340 INFO L87 Difference]: Start difference. First operand 238 states and 304 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:16,428 INFO L93 Difference]: Finished difference Result 238 states and 304 transitions. [2023-11-19 07:36:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-19 07:36:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:16,433 INFO L225 Difference]: With dead ends: 238 [2023-11-19 07:36:16,433 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 07:36:16,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:36:16,435 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 122 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:16,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 993 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 07:36:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-11-19 07:36:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 187 states have (on average 1.5026737967914439) internal successors, (281), 221 states have internal predecessors, (281), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 302 transitions. [2023-11-19 07:36:16,452 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 302 transitions. Word has length 23 [2023-11-19 07:36:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:16,453 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 302 transitions. [2023-11-19 07:36:16,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 302 transitions. [2023-11-19 07:36:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:36:16,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:16,455 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:16,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:16,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:36:16,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:16,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:16,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1801859128, now seen corresponding path program 1 times [2023-11-19 07:36:16,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:16,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559287922] [2023-11-19 07:36:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:16,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:36:16,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:16,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559287922] [2023-11-19 07:36:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559287922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:16,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173296487] [2023-11-19 07:36:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:16,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:16,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:16,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:16,896 INFO L87 Difference]: Start difference. First operand 236 states and 302 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:16,931 INFO L93 Difference]: Finished difference Result 454 states and 587 transitions. [2023-11-19 07:36:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:16,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:36:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:16,934 INFO L225 Difference]: With dead ends: 454 [2023-11-19 07:36:16,935 INFO L226 Difference]: Without dead ends: 239 [2023-11-19 07:36:16,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:16,937 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:16,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 572 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-19 07:36:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-19 07:36:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 190 states have (on average 1.4947368421052631) internal successors, (284), 224 states have internal predecessors, (284), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 305 transitions. [2023-11-19 07:36:16,953 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 305 transitions. Word has length 28 [2023-11-19 07:36:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:16,954 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 305 transitions. [2023-11-19 07:36:16,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 305 transitions. [2023-11-19 07:36:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:36:16,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:16,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:16,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:16,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:16,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -683660510, now seen corresponding path program 1 times [2023-11-19 07:36:16,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:16,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215306586] [2023-11-19 07:36:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:36:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:36:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215306586] [2023-11-19 07:36:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215306586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797915661] [2023-11-19 07:36:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:17,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:17,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:17,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:17,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:36:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:17,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:36:17,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:36:17,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797915661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:17,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:17,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:36:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206972278] [2023-11-19 07:36:17,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:17,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:36:17,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:36:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:17,698 INFO L87 Difference]: Start difference. First operand 239 states and 305 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:36:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:17,869 INFO L93 Difference]: Finished difference Result 480 states and 618 transitions. [2023-11-19 07:36:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:17,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-19 07:36:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:17,873 INFO L225 Difference]: With dead ends: 480 [2023-11-19 07:36:17,873 INFO L226 Difference]: Without dead ends: 256 [2023-11-19 07:36:17,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:17,876 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 7 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:17,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1963 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-19 07:36:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-19 07:36:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.4471153846153846) internal successors, (301), 241 states have internal predecessors, (301), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 322 transitions. [2023-11-19 07:36:17,893 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 322 transitions. Word has length 31 [2023-11-19 07:36:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:17,893 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 322 transitions. [2023-11-19 07:36:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:36:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 322 transitions. [2023-11-19 07:36:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:36:17,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:17,898 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:17,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:18,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:18,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1908042364, now seen corresponding path program 1 times [2023-11-19 07:36:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914163333] [2023-11-19 07:36:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:36:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914163333] [2023-11-19 07:36:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914163333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:18,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300025510] [2023-11-19 07:36:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:18,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:18,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:18,369 INFO L87 Difference]: Start difference. First operand 256 states and 322 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:18,411 INFO L93 Difference]: Finished difference Result 270 states and 338 transitions. [2023-11-19 07:36:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:36:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:18,416 INFO L225 Difference]: With dead ends: 270 [2023-11-19 07:36:18,416 INFO L226 Difference]: Without dead ends: 268 [2023-11-19 07:36:18,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:18,419 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 3 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:18,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-19 07:36:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2023-11-19 07:36:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 218 states have (on average 1.4403669724770642) internal successors, (314), 251 states have internal predecessors, (314), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2023-11-19 07:36:18,436 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 50 [2023-11-19 07:36:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:18,437 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2023-11-19 07:36:18,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2023-11-19 07:36:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:36:18,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:18,444 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:18,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:18,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:18,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1908040635, now seen corresponding path program 1 times [2023-11-19 07:36:18,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372089577] [2023-11-19 07:36:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:36:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372089577] [2023-11-19 07:36:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372089577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:18,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676723992] [2023-11-19 07:36:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:18,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:18,653 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:18,679 INFO L93 Difference]: Finished difference Result 266 states and 335 transitions. [2023-11-19 07:36:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:36:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:18,682 INFO L225 Difference]: With dead ends: 266 [2023-11-19 07:36:18,682 INFO L226 Difference]: Without dead ends: 265 [2023-11-19 07:36:18,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:18,683 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 0 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:18,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 570 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-19 07:36:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 261. [2023-11-19 07:36:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 214 states have (on average 1.439252336448598) internal successors, (308), 246 states have internal predecessors, (308), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 329 transitions. [2023-11-19 07:36:18,698 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 329 transitions. Word has length 50 [2023-11-19 07:36:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:18,700 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 329 transitions. [2023-11-19 07:36:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 329 transitions. [2023-11-19 07:36:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:36:18,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:18,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:18,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:18,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:18,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,704 INFO L85 PathProgramCache]: Analyzing trace with hash 74007213, now seen corresponding path program 1 times [2023-11-19 07:36:18,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13775207] [2023-11-19 07:36:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:36:18,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13775207] [2023-11-19 07:36:18,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13775207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:18,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363206838] [2023-11-19 07:36:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:18,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:19,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:36:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:19,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:19,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:36:19,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:36:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363206838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:19,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:36:19,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176440124] [2023-11-19 07:36:19,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:19,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:19,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:19,433 INFO L87 Difference]: Start difference. First operand 261 states and 329 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:19,499 INFO L93 Difference]: Finished difference Result 496 states and 634 transitions. [2023-11-19 07:36:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:19,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-19 07:36:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:19,502 INFO L225 Difference]: With dead ends: 496 [2023-11-19 07:36:19,503 INFO L226 Difference]: Without dead ends: 279 [2023-11-19 07:36:19,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:19,504 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 4 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:19,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1136 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-19 07:36:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-11-19 07:36:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 232 states have (on average 1.4051724137931034) internal successors, (326), 264 states have internal predecessors, (326), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 347 transitions. [2023-11-19 07:36:19,520 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 347 transitions. Word has length 58 [2023-11-19 07:36:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:19,521 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 347 transitions. [2023-11-19 07:36:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 347 transitions. [2023-11-19 07:36:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:36:19,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:19,522 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:19,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:36:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:19,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2010664513, now seen corresponding path program 1 times [2023-11-19 07:36:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428657204] [2023-11-19 07:36:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:20,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428657204] [2023-11-19 07:36:20,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428657204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:20,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:20,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057362366] [2023-11-19 07:36:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:20,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:20,019 INFO L87 Difference]: Start difference. First operand 279 states and 347 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:20,038 INFO L93 Difference]: Finished difference Result 464 states and 585 transitions. [2023-11-19 07:36:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-11-19 07:36:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:20,041 INFO L225 Difference]: With dead ends: 464 [2023-11-19 07:36:20,041 INFO L226 Difference]: Without dead ends: 277 [2023-11-19 07:36:20,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:20,043 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:20,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 566 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-19 07:36:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-11-19 07:36:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 231 states have (on average 1.3982683982683983) internal successors, (323), 262 states have internal predecessors, (323), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 343 transitions. [2023-11-19 07:36:20,058 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 343 transitions. Word has length 65 [2023-11-19 07:36:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:20,059 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 343 transitions. [2023-11-19 07:36:20,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:20,059 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 343 transitions. [2023-11-19 07:36:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 07:36:20,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:20,061 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:20,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:20,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:20,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash 962602114, now seen corresponding path program 1 times [2023-11-19 07:36:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410445584] [2023-11-19 07:36:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:20,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410445584] [2023-11-19 07:36:20,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410445584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:20,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675108447] [2023-11-19 07:36:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:20,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:20,287 INFO L87 Difference]: Start difference. First operand 277 states and 343 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:20,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:20,314 INFO L93 Difference]: Finished difference Result 282 states and 348 transitions. [2023-11-19 07:36:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:20,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-11-19 07:36:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:20,317 INFO L225 Difference]: With dead ends: 282 [2023-11-19 07:36:20,317 INFO L226 Difference]: Without dead ends: 280 [2023-11-19 07:36:20,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:20,318 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-19 07:36:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-11-19 07:36:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 234 states have (on average 1.393162393162393) internal successors, (326), 265 states have internal predecessors, (326), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 346 transitions. [2023-11-19 07:36:20,361 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 346 transitions. Word has length 70 [2023-11-19 07:36:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:20,361 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 346 transitions. [2023-11-19 07:36:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 346 transitions. [2023-11-19 07:36:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 07:36:20,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:20,362 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-19 07:36:20,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:20,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:20,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash -616371212, now seen corresponding path program 1 times [2023-11-19 07:36:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:20,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486202139] [2023-11-19 07:36:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:20,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:20,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486202139] [2023-11-19 07:36:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486202139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368762348] [2023-11-19 07:36:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:20,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:20,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:20,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:36:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:21,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:21,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:36:21,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368762348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:21,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:21,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-19 07:36:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507841108] [2023-11-19 07:36:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:21,113 INFO L87 Difference]: Start difference. First operand 280 states and 346 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:21,199 INFO L93 Difference]: Finished difference Result 357 states and 454 transitions. [2023-11-19 07:36:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:21,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2023-11-19 07:36:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:21,202 INFO L225 Difference]: With dead ends: 357 [2023-11-19 07:36:21,203 INFO L226 Difference]: Without dead ends: 346 [2023-11-19 07:36:21,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:21,204 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:21,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 923 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-19 07:36:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-11-19 07:36:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 298 states have (on average 1.4026845637583893) internal successors, (418), 330 states have internal predecessors, (418), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:36:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 441 transitions. [2023-11-19 07:36:21,230 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 441 transitions. Word has length 73 [2023-11-19 07:36:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:21,230 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 441 transitions. [2023-11-19 07:36:21,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 441 transitions. [2023-11-19 07:36:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:36:21,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:21,232 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-19 07:36:21,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:21,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:21,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1029319003, now seen corresponding path program 1 times [2023-11-19 07:36:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660497347] [2023-11-19 07:36:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-19 07:36:21,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:21,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660497347] [2023-11-19 07:36:21,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660497347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:21,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:21,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953001977] [2023-11-19 07:36:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:21,772 INFO L87 Difference]: Start difference. First operand 346 states and 441 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:21,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:21,821 INFO L93 Difference]: Finished difference Result 512 states and 655 transitions. [2023-11-19 07:36:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:21,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2023-11-19 07:36:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:21,826 INFO L225 Difference]: With dead ends: 512 [2023-11-19 07:36:21,826 INFO L226 Difference]: Without dead ends: 365 [2023-11-19 07:36:21,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:21,829 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 10 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:21,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 834 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-19 07:36:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 358. [2023-11-19 07:36:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 309 states have (on average 1.401294498381877) internal successors, (433), 341 states have internal predecessors, (433), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 458 transitions. [2023-11-19 07:36:21,859 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 458 transitions. Word has length 76 [2023-11-19 07:36:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:21,859 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 458 transitions. [2023-11-19 07:36:21,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 458 transitions. [2023-11-19 07:36:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:36:21,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:21,866 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-19 07:36:21,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:36:21,866 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:21,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1844118096, now seen corresponding path program 1 times [2023-11-19 07:36:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:21,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952420247] [2023-11-19 07:36:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-19 07:36:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952420247] [2023-11-19 07:36:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952420247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695083523] [2023-11-19 07:36:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:22,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:22,155 INFO L87 Difference]: Start difference. First operand 358 states and 458 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:22,200 INFO L93 Difference]: Finished difference Result 365 states and 469 transitions. [2023-11-19 07:36:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2023-11-19 07:36:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:22,203 INFO L225 Difference]: With dead ends: 365 [2023-11-19 07:36:22,204 INFO L226 Difference]: Without dead ends: 364 [2023-11-19 07:36:22,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:22,205 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 8 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:22,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 835 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-19 07:36:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 359. [2023-11-19 07:36:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 310 states have (on average 1.4) internal successors, (434), 342 states have internal predecessors, (434), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 459 transitions. [2023-11-19 07:36:22,225 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 459 transitions. Word has length 77 [2023-11-19 07:36:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:22,226 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 459 transitions. [2023-11-19 07:36:22,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 459 transitions. [2023-11-19 07:36:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:36:22,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:22,228 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:36:22,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:22,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1616593477, now seen corresponding path program 2 times [2023-11-19 07:36:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:22,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001853247] [2023-11-19 07:36:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-19 07:36:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001853247] [2023-11-19 07:36:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001853247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116226503] [2023-11-19 07:36:22,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:22,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:22,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:22,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:36:23,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:36:23,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:23,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:23,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:36:23,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:36:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116226503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:23,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:23,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:36:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123912387] [2023-11-19 07:36:23,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:36:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:36:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:23,385 INFO L87 Difference]: Start difference. First operand 359 states and 459 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:23,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:23,801 INFO L93 Difference]: Finished difference Result 634 states and 814 transitions. [2023-11-19 07:36:23,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:36:23,801 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-11-19 07:36:23,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:23,804 INFO L225 Difference]: With dead ends: 634 [2023-11-19 07:36:23,804 INFO L226 Difference]: Without dead ends: 394 [2023-11-19 07:36:23,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:36:23,806 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 12 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:23,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1928 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-19 07:36:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2023-11-19 07:36:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 346 states have (on average 1.3554913294797688) internal successors, (469), 377 states have internal predecessors, (469), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 494 transitions. [2023-11-19 07:36:23,826 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 494 transitions. Word has length 76 [2023-11-19 07:36:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:23,826 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 494 transitions. [2023-11-19 07:36:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 494 transitions. [2023-11-19 07:36:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:36:23,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:23,828 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:23,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:24,044 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:24,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1547205205, now seen corresponding path program 1 times [2023-11-19 07:36:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:24,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958074473] [2023-11-19 07:36:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958074473] [2023-11-19 07:36:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958074473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:24,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048454237] [2023-11-19 07:36:24,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:24,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:24,365 INFO L87 Difference]: Start difference. First operand 394 states and 494 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:24,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:24,431 INFO L93 Difference]: Finished difference Result 543 states and 676 transitions. [2023-11-19 07:36:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-11-19 07:36:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:24,435 INFO L225 Difference]: With dead ends: 543 [2023-11-19 07:36:24,435 INFO L226 Difference]: Without dead ends: 394 [2023-11-19 07:36:24,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:24,437 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 222 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:24,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 884 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-19 07:36:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2023-11-19 07:36:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 346 states have (on average 1.3526011560693643) internal successors, (468), 377 states have internal predecessors, (468), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 493 transitions. [2023-11-19 07:36:24,460 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 493 transitions. Word has length 80 [2023-11-19 07:36:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:24,461 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 493 transitions. [2023-11-19 07:36:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 493 transitions. [2023-11-19 07:36:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:36:24,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:24,463 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:24,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:36:24,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:24,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2067703721, now seen corresponding path program 1 times [2023-11-19 07:36:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527196032] [2023-11-19 07:36:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:24,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527196032] [2023-11-19 07:36:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527196032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:24,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770484158] [2023-11-19 07:36:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:24,762 INFO L87 Difference]: Start difference. First operand 394 states and 493 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:24,829 INFO L93 Difference]: Finished difference Result 692 states and 893 transitions. [2023-11-19 07:36:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-11-19 07:36:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:24,833 INFO L225 Difference]: With dead ends: 692 [2023-11-19 07:36:24,833 INFO L226 Difference]: Without dead ends: 528 [2023-11-19 07:36:24,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:24,835 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 84 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:24,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 837 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-19 07:36:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 510. [2023-11-19 07:36:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 462 states have (on average 1.3766233766233766) internal successors, (636), 493 states have internal predecessors, (636), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 661 transitions. [2023-11-19 07:36:24,865 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 661 transitions. Word has length 80 [2023-11-19 07:36:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 661 transitions. [2023-11-19 07:36:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 661 transitions. [2023-11-19 07:36:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:24,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:24,868 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:24,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:36:24,868 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:24,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 800958122, now seen corresponding path program 1 times [2023-11-19 07:36:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21355439] [2023-11-19 07:36:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21355439] [2023-11-19 07:36:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21355439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:25,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183012825] [2023-11-19 07:36:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:25,139 INFO L87 Difference]: Start difference. First operand 510 states and 661 transitions. Second operand has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:25,184 INFO L93 Difference]: Finished difference Result 519 states and 673 transitions. [2023-11-19 07:36:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-19 07:36:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:25,188 INFO L225 Difference]: With dead ends: 519 [2023-11-19 07:36:25,188 INFO L226 Difference]: Without dead ends: 517 [2023-11-19 07:36:25,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:25,192 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 4 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:25,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 554 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-19 07:36:25,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 514. [2023-11-19 07:36:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 466 states have (on average 1.3776824034334765) internal successors, (642), 497 states have internal predecessors, (642), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 667 transitions. [2023-11-19 07:36:25,222 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 667 transitions. Word has length 81 [2023-11-19 07:36:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:25,223 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 667 transitions. [2023-11-19 07:36:25,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 667 transitions. [2023-11-19 07:36:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:36:25,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:25,225 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:25,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:36:25,225 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:25,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash 879595391, now seen corresponding path program 1 times [2023-11-19 07:36:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:25,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615523416] [2023-11-19 07:36:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:25,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:36:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615523416] [2023-11-19 07:36:25,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615523416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:25,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:25,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166041203] [2023-11-19 07:36:25,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:25,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:25,483 INFO L87 Difference]: Start difference. First operand 514 states and 667 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:25,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:25,579 INFO L93 Difference]: Finished difference Result 650 states and 828 transitions. [2023-11-19 07:36:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-11-19 07:36:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:25,584 INFO L225 Difference]: With dead ends: 650 [2023-11-19 07:36:25,585 INFO L226 Difference]: Without dead ends: 520 [2023-11-19 07:36:25,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:25,586 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 6 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:25,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 806 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-11-19 07:36:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 516. [2023-11-19 07:36:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 468 states have (on average 1.376068376068376) internal successors, (644), 499 states have internal predecessors, (644), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 669 transitions. [2023-11-19 07:36:25,614 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 669 transitions. Word has length 83 [2023-11-19 07:36:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:25,614 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 669 transitions. [2023-11-19 07:36:25,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 669 transitions. [2023-11-19 07:36:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 07:36:25,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:25,616 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-19 07:36:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:36:25,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:25,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 908304547, now seen corresponding path program 1 times [2023-11-19 07:36:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57322113] [2023-11-19 07:36:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-19 07:36:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:36:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57322113] [2023-11-19 07:36:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57322113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:26,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418366257] [2023-11-19 07:36:26,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:26,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:26,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:26,020 INFO L87 Difference]: Start difference. First operand 516 states and 669 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:26,116 INFO L93 Difference]: Finished difference Result 566 states and 727 transitions. [2023-11-19 07:36:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2023-11-19 07:36:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:26,120 INFO L225 Difference]: With dead ends: 566 [2023-11-19 07:36:26,120 INFO L226 Difference]: Without dead ends: 400 [2023-11-19 07:36:26,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:26,123 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 37 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:26,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 379 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-19 07:36:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2023-11-19 07:36:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 387 states have (on average 1.322997416020672) internal successors, (512), 392 states have internal predecessors, (512), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 521 transitions. [2023-11-19 07:36:26,178 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 521 transitions. Word has length 85 [2023-11-19 07:36:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:26,178 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 521 transitions. [2023-11-19 07:36:26,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 521 transitions. [2023-11-19 07:36:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 07:36:26,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:26,180 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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] [2023-11-19 07:36:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:36:26,181 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:26,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash -347167411, now seen corresponding path program 1 times [2023-11-19 07:36:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982615221] [2023-11-19 07:36:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:26,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:36:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-19 07:36:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982615221] [2023-11-19 07:36:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982615221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:26,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:26,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274415293] [2023-11-19 07:36:26,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:26,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:26,522 INFO L87 Difference]: Start difference. First operand 400 states and 521 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:36:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:26,579 INFO L93 Difference]: Finished difference Result 458 states and 591 transitions. [2023-11-19 07:36:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:26,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 93 [2023-11-19 07:36:26,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:26,582 INFO L225 Difference]: With dead ends: 458 [2023-11-19 07:36:26,583 INFO L226 Difference]: Without dead ends: 422 [2023-11-19 07:36:26,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:26,584 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 16 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:26,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 591 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-19 07:36:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 408. [2023-11-19 07:36:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.321518987341772) internal successors, (522), 400 states have internal predecessors, (522), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 531 transitions. [2023-11-19 07:36:26,612 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 531 transitions. Word has length 93 [2023-11-19 07:36:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:26,612 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 531 transitions. [2023-11-19 07:36:26,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:36:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 531 transitions. [2023-11-19 07:36:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 07:36:26,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:26,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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] [2023-11-19 07:36:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:36:26,615 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:26,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2095347443, now seen corresponding path program 1 times [2023-11-19 07:36:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058569678] [2023-11-19 07:36:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:26,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:36:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-19 07:36:27,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058569678] [2023-11-19 07:36:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058569678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735003051] [2023-11-19 07:36:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:27,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:27,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:27,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:36:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:27,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:36:27,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-19 07:36:27,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735003051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:27,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:27,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:36:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085787104] [2023-11-19 07:36:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:27,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:27,678 INFO L87 Difference]: Start difference. First operand 408 states and 531 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:27,713 INFO L93 Difference]: Finished difference Result 411 states and 534 transitions. [2023-11-19 07:36:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2023-11-19 07:36:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:27,717 INFO L225 Difference]: With dead ends: 411 [2023-11-19 07:36:27,717 INFO L226 Difference]: Without dead ends: 410 [2023-11-19 07:36:27,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:27,719 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 23 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:27,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 294 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-19 07:36:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2023-11-19 07:36:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 395 states have (on average 1.3189873417721518) internal successors, (521), 399 states have internal predecessors, (521), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 530 transitions. [2023-11-19 07:36:27,745 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 530 transitions. Word has length 93 [2023-11-19 07:36:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:27,745 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 530 transitions. [2023-11-19 07:36:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 530 transitions. [2023-11-19 07:36:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:36:27,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:27,747 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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] [2023-11-19 07:36:27,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:27,969 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -531261218, now seen corresponding path program 1 times [2023-11-19 07:36:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842430290] [2023-11-19 07:36:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-19 07:36:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-19 07:36:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-19 07:36:28,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842430290] [2023-11-19 07:36:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842430290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982333330] [2023-11-19 07:36:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:28,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:28,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:28,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:36:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:36:29,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-19 07:36:29,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982333330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:29,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:29,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-11-19 07:36:29,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135174911] [2023-11-19 07:36:29,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:29,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:29,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:29,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:29,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:29,114 INFO L87 Difference]: Start difference. First operand 407 states and 530 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:29,216 INFO L93 Difference]: Finished difference Result 451 states and 585 transitions. [2023-11-19 07:36:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2023-11-19 07:36:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:29,224 INFO L225 Difference]: With dead ends: 451 [2023-11-19 07:36:29,224 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 07:36:29,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:29,229 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 116 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:29,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 556 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 07:36:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-19 07:36:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 277 states have (on average 1.259927797833935) internal successors, (349), 280 states have internal predecessors, (349), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 357 transitions. [2023-11-19 07:36:29,251 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 357 transitions. Word has length 94 [2023-11-19 07:36:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:29,252 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 357 transitions. [2023-11-19 07:36:29,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:36:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 357 transitions. [2023-11-19 07:36:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:36:29,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:29,254 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:36:29,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:29,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:36:29,477 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:29,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1625396847, now seen corresponding path program 1 times [2023-11-19 07:36:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694928215] [2023-11-19 07:36:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:36:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:36:29,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694928215] [2023-11-19 07:36:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694928215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291477105] [2023-11-19 07:36:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:29,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:29,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:29,799 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:29,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:36:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:30,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:30,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:36:30,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291477105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:30,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:36:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467715174] [2023-11-19 07:36:30,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:30,455 INFO L87 Difference]: Start difference. First operand 288 states and 357 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:30,482 INFO L93 Difference]: Finished difference Result 288 states and 357 transitions. [2023-11-19 07:36:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:30,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2023-11-19 07:36:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:30,484 INFO L225 Difference]: With dead ends: 288 [2023-11-19 07:36:30,485 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 07:36:30,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:30,486 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 3 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:30,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 284 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 07:36:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-19 07:36:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 277 states have (on average 1.256317689530686) internal successors, (348), 279 states have internal predecessors, (348), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 356 transitions. [2023-11-19 07:36:30,505 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 356 transitions. Word has length 108 [2023-11-19 07:36:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:30,505 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 356 transitions. [2023-11-19 07:36:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 356 transitions. [2023-11-19 07:36:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:36:30,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:30,507 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:36:30,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:30,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:36:30,731 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:30,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1152305986, now seen corresponding path program 1 times [2023-11-19 07:36:30,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178311453] [2023-11-19 07:36:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:30,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:36:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:36:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:31,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178311453] [2023-11-19 07:36:31,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178311453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:31,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800141056] [2023-11-19 07:36:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:31,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:31,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:31,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:31,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:36:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:31,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:36:31,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:36:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800141056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:31,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:36:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028051293] [2023-11-19 07:36:31,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:31,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:31,859 INFO L87 Difference]: Start difference. First operand 287 states and 356 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:31,910 INFO L93 Difference]: Finished difference Result 297 states and 368 transitions. [2023-11-19 07:36:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2023-11-19 07:36:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:31,913 INFO L225 Difference]: With dead ends: 297 [2023-11-19 07:36:31,913 INFO L226 Difference]: Without dead ends: 296 [2023-11-19 07:36:31,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:31,915 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:31,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-19 07:36:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2023-11-19 07:36:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 286 states have (on average 1.2482517482517483) internal successors, (357), 288 states have internal predecessors, (357), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 365 transitions. [2023-11-19 07:36:31,938 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 365 transitions. Word has length 109 [2023-11-19 07:36:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:31,939 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 365 transitions. [2023-11-19 07:36:31,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 365 transitions. [2023-11-19 07:36:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-19 07:36:31,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:31,942 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:31,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:32,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:36:32,156 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:32,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1054672811, now seen corresponding path program 1 times [2023-11-19 07:36:32,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:32,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735636950] [2023-11-19 07:36:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:32,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:36:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:32,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735636950] [2023-11-19 07:36:32,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735636950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:32,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598865720] [2023-11-19 07:36:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:32,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:32,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:32,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:36:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:33,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:36:33,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:36:33,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598865720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:33,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:33,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:36:33,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672991302] [2023-11-19 07:36:33,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:33,658 INFO L87 Difference]: Start difference. First operand 296 states and 365 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:33,791 INFO L93 Difference]: Finished difference Result 405 states and 482 transitions. [2023-11-19 07:36:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-11-19 07:36:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:33,795 INFO L225 Difference]: With dead ends: 405 [2023-11-19 07:36:33,795 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 07:36:33,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:33,796 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 4 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:33,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 426 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 07:36:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2023-11-19 07:36:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 391 states have (on average 1.19693094629156) internal successors, (468), 393 states have internal predecessors, (468), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:36:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 476 transitions. [2023-11-19 07:36:33,825 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 476 transitions. Word has length 113 [2023-11-19 07:36:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:33,826 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 476 transitions. [2023-11-19 07:36:33,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:36:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 476 transitions. [2023-11-19 07:36:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 07:36:33,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:33,828 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:33,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:34,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:36:34,043 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1100994994, now seen corresponding path program 2 times [2023-11-19 07:36:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626074756] [2023-11-19 07:36:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:34,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:36:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-19 07:36:34,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626074756] [2023-11-19 07:36:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626074756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762380763] [2023-11-19 07:36:34,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:34,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:34,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:34,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:34,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:36:35,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:36:35,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:35,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:35,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-19 07:36:35,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-19 07:36:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762380763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:35,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 07:36:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614761110] [2023-11-19 07:36:35,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:35,443 INFO L87 Difference]: Start difference. First operand 401 states and 476 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:36:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:35,535 INFO L93 Difference]: Finished difference Result 401 states and 476 transitions. [2023-11-19 07:36:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 118 [2023-11-19 07:36:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:35,538 INFO L225 Difference]: With dead ends: 401 [2023-11-19 07:36:35,539 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:36:35,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:35,540 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 75 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:35,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 472 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:36:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-19 07:36:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 363 states have (on average 1.1900826446280992) internal successors, (432), 364 states have internal predecessors, (432), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:36:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 439 transitions. [2023-11-19 07:36:35,567 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 439 transitions. Word has length 118 [2023-11-19 07:36:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 439 transitions. [2023-11-19 07:36:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:36:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 439 transitions. [2023-11-19 07:36:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:36:35,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:35,570 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 3, 3, 3, 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] [2023-11-19 07:36:35,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:35,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:36:35,796 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 07:36:35,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1870507873, now seen corresponding path program 1 times [2023-11-19 07:36:35,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:35,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288965017] [2023-11-19 07:36:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:36:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 07:36:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-19 07:36:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 07:36:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288965017] [2023-11-19 07:36:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288965017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865634297] [2023-11-19 07:36:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:39,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:39,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:39,088 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:39,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59f05478-f1c9-4326-8f55-d8a544358c20/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:36:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:40,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-19 07:36:40,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 07:36:41,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 07:36:49,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865634297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:49,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:36:49,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 58 [2023-11-19 07:36:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119802057] [2023-11-19 07:36:49,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-19 07:36:49,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-19 07:36:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=3014, Unknown=0, NotChecked=0, Total=3422 [2023-11-19 07:36:49,835 INFO L87 Difference]: Start difference. First operand 371 states and 439 transitions. Second operand has 59 states, 55 states have (on average 2.4) internal successors, (132), 54 states have internal predecessors, (132), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)