./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme --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 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:53,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:53,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 11:53:53,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:53,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:53,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:53,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:53,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:53,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:53,301 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:53,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:53,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:53,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:53,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:53,306 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:53,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:53,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:53,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:53,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:53,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:53,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:53,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:53,310 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:53,310 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:53,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:53,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:53,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:53,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:53,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:53,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:53,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:53,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:53,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:53,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:53,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:53,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:53,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:53,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:53,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:53,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:53,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:53,318 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_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f [2023-11-26 11:53:53,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:53,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:53,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:53,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:53,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:53,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-11-26 11:53:56,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:57,169 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:57,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-11-26 11:53:57,212 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/data/3533288c6/72bd4f71962d4f49a92ef438738c74fd/FLAG77dd3853b [2023-11-26 11:53:57,229 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/data/3533288c6/72bd4f71962d4f49a92ef438738c74fd [2023-11-26 11:53:57,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:57,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:57,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:57,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:57,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:57,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:57" (1/1) ... [2023-11-26 11:53:57,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9666c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:57, skipping insertion in model container [2023-11-26 11:53:57,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:57" (1/1) ... [2023-11-26 11:53:57,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:59,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:59,063 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:59,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:59,517 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:59,517 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:59,525 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:59,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59 WrapperNode [2023-11-26 11:53:59,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:59,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:59,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:59,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:59,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,695 INFO L138 Inliner]: procedures = 615, calls = 250, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 730 [2023-11-26 11:53:59,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:59,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:59,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:59,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:59,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,778 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 11:53:59,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:59,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:59,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:59,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:59,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (1/1) ... [2023-11-26 11:53:59,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:59,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:59,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:59,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2023-11-26 11:53:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2023-11-26 11:53:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-26 11:53:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 11:53:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 11:53:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:53:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:53:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 11:53:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 11:53:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 11:53:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 11:53:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 11:53:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 11:53:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-26 11:53:59,984 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-26 11:53:59,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:53:59,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:53:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 11:53:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 11:53:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:53:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:54:00,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:00,488 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:01,356 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:01,461 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:01,462 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 11:54:01,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:01 BoogieIcfgContainer [2023-11-26 11:54:01,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:01,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:01,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:01,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:01,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:57" (1/3) ... [2023-11-26 11:54:01,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138862ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:01, skipping insertion in model container [2023-11-26 11:54:01,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:59" (2/3) ... [2023-11-26 11:54:01,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138862ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:01, skipping insertion in model container [2023-11-26 11:54:01,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:01" (3/3) ... [2023-11-26 11:54:01,481 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-2.i [2023-11-26 11:54:01,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:01,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-26 11:54:01,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:01,603 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;@2b8a9ebf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:01,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-26 11:54:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 137 states have (on average 1.6715328467153285) internal successors, (229), 171 states have internal predecessors, (229), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:54:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:54:01,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:01,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:54:01,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:01,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash 566373, now seen corresponding path program 1 times [2023-11-26 11:54:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:01,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576483772] [2023-11-26 11:54:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576483772] [2023-11-26 11:54:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576483772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:02,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:54:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351201124] [2023-11-26 11:54:02,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:02,411 INFO L87 Difference]: Start difference. First operand has 191 states, 137 states have (on average 1.6715328467153285) internal successors, (229), 171 states have internal predecessors, (229), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-26 11:54:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:02,709 INFO L93 Difference]: Finished difference Result 377 states and 526 transitions. [2023-11-26 11:54:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:02,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-26 11:54:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:02,723 INFO L225 Difference]: With dead ends: 377 [2023-11-26 11:54:02,723 INFO L226 Difference]: Without dead ends: 180 [2023-11-26 11:54:02,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:02,737 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:02,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 442 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-26 11:54:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-26 11:54:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 128 states have (on average 1.546875) internal successors, (198), 163 states have internal predecessors, (198), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2023-11-26 11:54:02,800 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 3 [2023-11-26 11:54:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:02,801 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2023-11-26 11:54:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-26 11:54:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2023-11-26 11:54:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:54:02,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:02,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:54:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:54:02,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:02,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash -306707720, now seen corresponding path program 1 times [2023-11-26 11:54:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973513240] [2023-11-26 11:54:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973513240] [2023-11-26 11:54:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973513240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295498768] [2023-11-26 11:54:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:03,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:03,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:03,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:03,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:54:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:03,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:03,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:03,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295498768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:03,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-26 11:54:03,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119809584] [2023-11-26 11:54:03,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:03,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:03,411 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-26 11:54:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:03,657 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2023-11-26 11:54:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:03,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-26 11:54:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:03,660 INFO L225 Difference]: With dead ends: 180 [2023-11-26 11:54:03,661 INFO L226 Difference]: Without dead ends: 179 [2023-11-26 11:54:03,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:03,663 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 3 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:03,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 610 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-26 11:54:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-26 11:54:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.5390625) internal successors, (197), 162 states have internal predecessors, (197), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2023-11-26 11:54:03,682 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 6 [2023-11-26 11:54:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:03,682 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2023-11-26 11:54:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-26 11:54:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2023-11-26 11:54:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:54:03,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:03,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:54:03,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:54:03,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:03,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -918004382, now seen corresponding path program 1 times [2023-11-26 11:54:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433694565] [2023-11-26 11:54:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:54:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433694565] [2023-11-26 11:54:04,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433694565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:04,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:04,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071063797] [2023-11-26 11:54:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:04,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:04,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:04,044 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 11:54:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:04,284 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2023-11-26 11:54:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-26 11:54:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:04,288 INFO L225 Difference]: With dead ends: 179 [2023-11-26 11:54:04,288 INFO L226 Difference]: Without dead ends: 178 [2023-11-26 11:54:04,288 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 [2023-11-26 11:54:04,290 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:04,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 408 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-26 11:54:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-11-26 11:54:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 126 states have (on average 1.5396825396825398) internal successors, (194), 159 states have internal predecessors, (194), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 221 transitions. [2023-11-26 11:54:04,306 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 221 transitions. Word has length 7 [2023-11-26 11:54:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:04,306 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 221 transitions. [2023-11-26 11:54:04,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-26 11:54:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 221 transitions. [2023-11-26 11:54:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:54:04,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:04,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:54:04,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:04,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash -387870960, now seen corresponding path program 1 times [2023-11-26 11:54:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:04,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118934171] [2023-11-26 11:54:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:54:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118934171] [2023-11-26 11:54:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118934171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695393967] [2023-11-26 11:54:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:04,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:04,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:04,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:54:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:04,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:54:04,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:54:04,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695393967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:04,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:54:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594186457] [2023-11-26 11:54:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:04,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:04,777 INFO L87 Difference]: Start difference. First operand 176 states and 221 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-26 11:54:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:04,924 INFO L93 Difference]: Finished difference Result 176 states and 221 transitions. [2023-11-26 11:54:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:04,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-26 11:54:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:04,928 INFO L225 Difference]: With dead ends: 176 [2023-11-26 11:54:04,928 INFO L226 Difference]: Without dead ends: 174 [2023-11-26 11:54:04,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:04,933 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 69 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:04,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 332 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:54:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-26 11:54:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-26 11:54:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 126 states have (on average 1.5238095238095237) internal successors, (192), 157 states have internal predecessors, (192), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 219 transitions. [2023-11-26 11:54:04,963 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 219 transitions. Word has length 12 [2023-11-26 11:54:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:04,968 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 219 transitions. [2023-11-26 11:54:04,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-26 11:54:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 219 transitions. [2023-11-26 11:54:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:54:04,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:04,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:04,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:05,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:05,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:05,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash 860902483, now seen corresponding path program 1 times [2023-11-26 11:54:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:05,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464829017] [2023-11-26 11:54:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:05,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:54:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464829017] [2023-11-26 11:54:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464829017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850944725] [2023-11-26 11:54:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:05,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:05,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:54:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:05,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:05,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:05,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:05,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850944725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:05,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:05,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 11:54:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187463566] [2023-11-26 11:54:05,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:05,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:05,628 INFO L87 Difference]: Start difference. First operand 174 states and 219 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-26 11:54:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:06,049 INFO L93 Difference]: Finished difference Result 352 states and 444 transitions. [2023-11-26 11:54:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 13 [2023-11-26 11:54:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:06,052 INFO L225 Difference]: With dead ends: 352 [2023-11-26 11:54:06,052 INFO L226 Difference]: Without dead ends: 183 [2023-11-26 11:54:06,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:06,054 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 4 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 806 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:54:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-26 11:54:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-26 11:54:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.488888888888889) internal successors, (201), 166 states have internal predecessors, (201), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 228 transitions. [2023-11-26 11:54:06,079 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 228 transitions. Word has length 13 [2023-11-26 11:54:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:06,080 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 228 transitions. [2023-11-26 11:54:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-26 11:54:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 228 transitions. [2023-11-26 11:54:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:54:06,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:06,081 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:06,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:06,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:06,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:06,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 352770054, now seen corresponding path program 2 times [2023-11-26 11:54:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497892093] [2023-11-26 11:54:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:06,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:54:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:06,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497892093] [2023-11-26 11:54:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497892093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025853280] [2023-11-26 11:54:06,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:54:06,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:06,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:06,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:06,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:54:06,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:54:06,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:54:06,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:54:06,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:54:07,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025853280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:07,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-26 11:54:07,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453014435] [2023-11-26 11:54:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:54:07,039 INFO L87 Difference]: Start difference. First operand 183 states and 228 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-11-26 11:54:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:07,565 INFO L93 Difference]: Finished difference Result 183 states and 228 transitions. [2023-11-26 11:54:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:54:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 22 [2023-11-26 11:54:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:07,569 INFO L225 Difference]: With dead ends: 183 [2023-11-26 11:54:07,569 INFO L226 Difference]: Without dead ends: 181 [2023-11-26 11:54:07,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:54:07,570 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 68 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:07,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 683 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:54:07,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-26 11:54:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-26 11:54:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 135 states have (on average 1.474074074074074) internal successors, (199), 164 states have internal predecessors, (199), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 226 transitions. [2023-11-26 11:54:07,587 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 226 transitions. Word has length 22 [2023-11-26 11:54:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:07,588 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 226 transitions. [2023-11-26 11:54:07,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-11-26 11:54:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 226 transitions. [2023-11-26 11:54:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:54:07,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:07,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:07,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:54:07,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:07,798 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:07,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -737360790, now seen corresponding path program 1 times [2023-11-26 11:54:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384946431] [2023-11-26 11:54:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:54:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:54:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384946431] [2023-11-26 11:54:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384946431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:08,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:08,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130520686] [2023-11-26 11:54:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:08,073 INFO L87 Difference]: Start difference. First operand 181 states and 226 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-26 11:54:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:08,277 INFO L93 Difference]: Finished difference Result 345 states and 436 transitions. [2023-11-26 11:54:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:08,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 27 [2023-11-26 11:54:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:08,281 INFO L225 Difference]: With dead ends: 345 [2023-11-26 11:54:08,281 INFO L226 Difference]: Without dead ends: 184 [2023-11-26 11:54:08,284 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 [2023-11-26 11:54:08,287 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:08,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 397 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-26 11:54:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-26 11:54:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 138 states have (on average 1.463768115942029) internal successors, (202), 167 states have internal predecessors, (202), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 229 transitions. [2023-11-26 11:54:08,303 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 229 transitions. Word has length 27 [2023-11-26 11:54:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:08,305 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 229 transitions. [2023-11-26 11:54:08,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-26 11:54:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 229 transitions. [2023-11-26 11:54:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:54:08,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:08,309 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] [2023-11-26 11:54:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:54:08,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:08,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2042801333, now seen corresponding path program 1 times [2023-11-26 11:54:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535836356] [2023-11-26 11:54:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:54:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:54:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535836356] [2023-11-26 11:54:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535836356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470002075] [2023-11-26 11:54:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:08,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:08,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:54:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:54:08,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:09,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470002075] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:09,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-26 11:54:09,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893641049] [2023-11-26 11:54:09,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:54:09,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:54:09,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:54:09,184 INFO L87 Difference]: Start difference. First operand 184 states and 229 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2023-11-26 11:54:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:09,863 INFO L93 Difference]: Finished difference Result 371 states and 467 transitions. [2023-11-26 11:54:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:54:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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 30 [2023-11-26 11:54:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:09,867 INFO L225 Difference]: With dead ends: 371 [2023-11-26 11:54:09,867 INFO L226 Difference]: Without dead ends: 201 [2023-11-26 11:54:09,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:54:09,869 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 7 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:09,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1160 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:54:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-26 11:54:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-11-26 11:54:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 156 states have (on average 1.4038461538461537) internal successors, (219), 184 states have internal predecessors, (219), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2023-11-26 11:54:09,885 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 30 [2023-11-26 11:54:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:09,885 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2023-11-26 11:54:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2023-11-26 11:54:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2023-11-26 11:54:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:54:09,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:09,888 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] [2023-11-26 11:54:09,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:10,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:10,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1432793795, now seen corresponding path program 1 times [2023-11-26 11:54:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:10,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101528567] [2023-11-26 11:54:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:10,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101528567] [2023-11-26 11:54:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101528567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:10,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318911986] [2023-11-26 11:54:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:10,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:10,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:10,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:10,335 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-26 11:54:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:10,617 INFO L93 Difference]: Finished difference Result 206 states and 251 transitions. [2023-11-26 11:54:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 48 [2023-11-26 11:54:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:10,620 INFO L225 Difference]: With dead ends: 206 [2023-11-26 11:54:10,620 INFO L226 Difference]: Without dead ends: 204 [2023-11-26 11:54:10,621 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 [2023-11-26 11:54:10,622 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:10,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 397 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-26 11:54:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-26 11:54:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 159 states have (on average 1.3962264150943395) internal successors, (222), 187 states have internal predecessors, (222), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 249 transitions. [2023-11-26 11:54:10,637 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 249 transitions. Word has length 48 [2023-11-26 11:54:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:10,638 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 249 transitions. [2023-11-26 11:54:10,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-26 11:54:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 249 transitions. [2023-11-26 11:54:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:54:10,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:10,641 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] [2023-11-26 11:54:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:54:10,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:10,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash -228014586, now seen corresponding path program 1 times [2023-11-26 11:54:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005036051] [2023-11-26 11:54:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:54:10,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:10,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005036051] [2023-11-26 11:54:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005036051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:10,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507217176] [2023-11-26 11:54:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:10,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:10,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:10,979 INFO L87 Difference]: Start difference. First operand 204 states and 249 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:54:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:11,263 INFO L93 Difference]: Finished difference Result 218 states and 265 transitions. [2023-11-26 11:54:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:11,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-26 11:54:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:11,266 INFO L225 Difference]: With dead ends: 218 [2023-11-26 11:54:11,266 INFO L226 Difference]: Without dead ends: 216 [2023-11-26 11:54:11,266 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 [2023-11-26 11:54:11,267 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 3 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:11,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 392 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-26 11:54:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2023-11-26 11:54:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 169 states have (on average 1.3905325443786982) internal successors, (235), 197 states have internal predecessors, (235), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2023-11-26 11:54:11,280 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 49 [2023-11-26 11:54:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:11,281 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2023-11-26 11:54:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:54:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2023-11-26 11:54:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:54:11,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:11,283 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] [2023-11-26 11:54:11,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:54:11,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -228012857, now seen corresponding path program 1 times [2023-11-26 11:54:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206862363] [2023-11-26 11:54:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:54:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:11,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206862363] [2023-11-26 11:54:11,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206862363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:11,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:11,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:11,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682507407] [2023-11-26 11:54:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:11,483 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:54:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:11,647 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2023-11-26 11:54:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-26 11:54:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:11,650 INFO L225 Difference]: With dead ends: 214 [2023-11-26 11:54:11,651 INFO L226 Difference]: Without dead ends: 213 [2023-11-26 11:54:11,651 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 [2023-11-26 11:54:11,652 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:11,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 395 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-26 11:54:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2023-11-26 11:54:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 165 states have (on average 1.387878787878788) internal successors, (229), 192 states have internal predecessors, (229), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 256 transitions. [2023-11-26 11:54:11,665 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 256 transitions. Word has length 49 [2023-11-26 11:54:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:11,666 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 256 transitions. [2023-11-26 11:54:11,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:54:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 256 transitions. [2023-11-26 11:54:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:54:11,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:11,668 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] [2023-11-26 11:54:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:54:11,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:11,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -974436043, now seen corresponding path program 1 times [2023-11-26 11:54:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063363660] [2023-11-26 11:54:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:11,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:11,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:11,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063363660] [2023-11-26 11:54:11,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063363660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927818891] [2023-11-26 11:54:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:11,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:11,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:11,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:11,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:54:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:12,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:54:12,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:54:12,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927818891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-26 11:54:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174277877] [2023-11-26 11:54:12,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:12,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:12,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:12,340 INFO L87 Difference]: Start difference. First operand 209 states and 256 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-26 11:54:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:12,696 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2023-11-26 11:54:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 51 [2023-11-26 11:54:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:12,699 INFO L225 Difference]: With dead ends: 255 [2023-11-26 11:54:12,699 INFO L226 Difference]: Without dead ends: 246 [2023-11-26 11:54:12,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:12,700 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 50 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 617 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-26 11:54:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 211. [2023-11-26 11:54:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 194 states have internal predecessors, (231), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 258 transitions. [2023-11-26 11:54:12,714 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 258 transitions. Word has length 51 [2023-11-26 11:54:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:12,714 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 258 transitions. [2023-11-26 11:54:12,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-26 11:54:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 258 transitions. [2023-11-26 11:54:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:54:12,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:12,716 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] [2023-11-26 11:54:12,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:12,930 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:12,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1233130577, now seen corresponding path program 1 times [2023-11-26 11:54:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:12,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199718601] [2023-11-26 11:54:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:54:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:13,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199718601] [2023-11-26 11:54:13,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199718601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682125213] [2023-11-26 11:54:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:13,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:13,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:54:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:13,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:13,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:54:13,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:54:13,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682125213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:13,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:13,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:54:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108178974] [2023-11-26 11:54:13,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:13,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:13,684 INFO L87 Difference]: Start difference. First operand 211 states and 258 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-26 11:54:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:14,049 INFO L93 Difference]: Finished difference Result 395 states and 491 transitions. [2023-11-26 11:54:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:14,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 57 [2023-11-26 11:54:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:14,052 INFO L225 Difference]: With dead ends: 395 [2023-11-26 11:54:14,052 INFO L226 Difference]: Without dead ends: 229 [2023-11-26 11:54:14,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:14,054 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 4 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:14,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 591 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-26 11:54:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-26 11:54:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 185 states have (on average 1.345945945945946) internal successors, (249), 212 states have internal predecessors, (249), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 276 transitions. [2023-11-26 11:54:14,072 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 276 transitions. Word has length 57 [2023-11-26 11:54:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:14,073 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 276 transitions. [2023-11-26 11:54:14,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-26 11:54:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 276 transitions. [2023-11-26 11:54:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:54:14,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:14,075 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] [2023-11-26 11:54:14,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:54:14,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:14,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash -790126082, now seen corresponding path program 1 times [2023-11-26 11:54:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188946697] [2023-11-26 11:54:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188946697] [2023-11-26 11:54:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188946697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:14,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872744849] [2023-11-26 11:54:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:14,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:14,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:14,532 INFO L87 Difference]: Start difference. First operand 229 states and 276 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:14,650 INFO L93 Difference]: Finished difference Result 241 states and 291 transitions. [2023-11-26 11:54:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 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 61 [2023-11-26 11:54:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:14,654 INFO L225 Difference]: With dead ends: 241 [2023-11-26 11:54:14,654 INFO L226 Difference]: Without dead ends: 239 [2023-11-26 11:54:14,654 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 [2023-11-26 11:54:14,655 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 6 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:14,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 395 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:54:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-26 11:54:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2023-11-26 11:54:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 189 states have (on average 1.343915343915344) internal successors, (254), 216 states have internal predecessors, (254), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2023-11-26 11:54:14,669 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 61 [2023-11-26 11:54:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:14,670 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2023-11-26 11:54:14,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2023-11-26 11:54:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:54:14,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:14,671 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] [2023-11-26 11:54:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:54:14,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:14,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1578593108, now seen corresponding path program 1 times [2023-11-26 11:54:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883167587] [2023-11-26 11:54:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:14,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883167587] [2023-11-26 11:54:14,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883167587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:14,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034846950] [2023-11-26 11:54:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:14,910 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-26 11:54:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:15,369 INFO L93 Difference]: Finished difference Result 359 states and 444 transitions. [2023-11-26 11:54:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:54:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 62 [2023-11-26 11:54:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:15,373 INFO L225 Difference]: With dead ends: 359 [2023-11-26 11:54:15,373 INFO L226 Difference]: Without dead ends: 264 [2023-11-26 11:54:15,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:15,376 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 52 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:15,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 588 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:54:15,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-26 11:54:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 235. [2023-11-26 11:54:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 191 states have (on average 1.3403141361256545) internal successors, (256), 218 states have internal predecessors, (256), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 283 transitions. [2023-11-26 11:54:15,394 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 283 transitions. Word has length 62 [2023-11-26 11:54:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:15,395 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 283 transitions. [2023-11-26 11:54:15,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-26 11:54:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 283 transitions. [2023-11-26 11:54:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:54:15,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:15,398 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] [2023-11-26 11:54:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:54:15,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:15,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash -264308777, now seen corresponding path program 1 times [2023-11-26 11:54:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:15,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700995273] [2023-11-26 11:54:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:15,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:15,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700995273] [2023-11-26 11:54:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700995273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:15,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137376165] [2023-11-26 11:54:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:15,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:15,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:15,703 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:15,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:54:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:16,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:16,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:16,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:16,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137376165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:16,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:16,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 11:54:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332357195] [2023-11-26 11:54:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:16,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:16,204 INFO L87 Difference]: Start difference. First operand 235 states and 283 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:16,500 INFO L93 Difference]: Finished difference Result 241 states and 291 transitions. [2023-11-26 11:54:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:16,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 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 [2023-11-26 11:54:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:16,503 INFO L225 Difference]: With dead ends: 241 [2023-11-26 11:54:16,504 INFO L226 Difference]: Without dead ends: 240 [2023-11-26 11:54:16,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:16,505 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 12 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:16,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 591 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-26 11:54:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2023-11-26 11:54:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.3350785340314135) internal successors, (255), 217 states have internal predecessors, (255), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 282 transitions. [2023-11-26 11:54:16,520 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 282 transitions. Word has length 65 [2023-11-26 11:54:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:16,521 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 282 transitions. [2023-11-26 11:54:16,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 282 transitions. [2023-11-26 11:54:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:54:16,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:16,523 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] [2023-11-26 11:54:16,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:54:16,732 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:16,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 396362549, now seen corresponding path program 1 times [2023-11-26 11:54:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:16,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255934223] [2023-11-26 11:54:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:16,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255934223] [2023-11-26 11:54:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255934223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071313651] [2023-11-26 11:54:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:16,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:16,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:16,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:54:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:17,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:17,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:17,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071313651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:17,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:54:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302638203] [2023-11-26 11:54:17,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:17,454 INFO L87 Difference]: Start difference. First operand 234 states and 282 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:18,030 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2023-11-26 11:54:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 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 66 [2023-11-26 11:54:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:18,034 INFO L225 Difference]: With dead ends: 271 [2023-11-26 11:54:18,034 INFO L226 Difference]: Without dead ends: 270 [2023-11-26 11:54:18,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:18,035 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 40 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:18,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 601 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:54:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-26 11:54:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 246. [2023-11-26 11:54:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 229 states have internal predecessors, (270), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 297 transitions. [2023-11-26 11:54:18,052 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 297 transitions. Word has length 66 [2023-11-26 11:54:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:18,053 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 297 transitions. [2023-11-26 11:54:18,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:54:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 297 transitions. [2023-11-26 11:54:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:54:18,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:18,054 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] [2023-11-26 11:54:18,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:18,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:54:18,263 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:18,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash 204190654, now seen corresponding path program 1 times [2023-11-26 11:54:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:18,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061460404] [2023-11-26 11:54:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:18,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:18,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061460404] [2023-11-26 11:54:18,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061460404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119438500] [2023-11-26 11:54:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:18,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:18,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:18,553 INFO L87 Difference]: Start difference. First operand 246 states and 297 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-26 11:54:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:18,882 INFO L93 Difference]: Finished difference Result 365 states and 450 transitions. [2023-11-26 11:54:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:54:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 66 [2023-11-26 11:54:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:18,888 INFO L225 Difference]: With dead ends: 365 [2023-11-26 11:54:18,888 INFO L226 Difference]: Without dead ends: 270 [2023-11-26 11:54:18,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:18,890 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 31 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:18,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 593 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-26 11:54:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 248. [2023-11-26 11:54:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 205 states have (on average 1.326829268292683) internal successors, (272), 231 states have internal predecessors, (272), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 299 transitions. [2023-11-26 11:54:18,908 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 299 transitions. Word has length 66 [2023-11-26 11:54:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:18,908 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 299 transitions. [2023-11-26 11:54:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-26 11:54:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 299 transitions. [2023-11-26 11:54:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:54:18,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:18,910 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] [2023-11-26 11:54:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:54:18,911 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1065618418, now seen corresponding path program 1 times [2023-11-26 11:54:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203574968] [2023-11-26 11:54:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203574968] [2023-11-26 11:54:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203574968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097416372] [2023-11-26 11:54:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:19,573 INFO L87 Difference]: Start difference. First operand 248 states and 299 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 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) [2023-11-26 11:54:19,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:19,864 INFO L93 Difference]: Finished difference Result 333 states and 401 transitions. [2023-11-26 11:54:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:19,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 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 68 [2023-11-26 11:54:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:19,867 INFO L225 Difference]: With dead ends: 333 [2023-11-26 11:54:19,867 INFO L226 Difference]: Without dead ends: 251 [2023-11-26 11:54:19,868 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 [2023-11-26 11:54:19,869 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 195 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:19,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 390 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-26 11:54:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2023-11-26 11:54:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 207 states have (on average 1.3236714975845412) internal successors, (274), 233 states have internal predecessors, (274), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 301 transitions. [2023-11-26 11:54:19,887 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 301 transitions. Word has length 68 [2023-11-26 11:54:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:19,888 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 301 transitions. [2023-11-26 11:54:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 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) [2023-11-26 11:54:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 301 transitions. [2023-11-26 11:54:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:54:19,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:19,889 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] [2023-11-26 11:54:19,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:54:19,890 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:19,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1800831424, now seen corresponding path program 1 times [2023-11-26 11:54:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:19,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612678361] [2023-11-26 11:54:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:20,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612678361] [2023-11-26 11:54:20,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612678361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:20,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:20,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473226926] [2023-11-26 11:54:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:20,184 INFO L87 Difference]: Start difference. First operand 250 states and 301 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-26 11:54:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:20,503 INFO L93 Difference]: Finished difference Result 259 states and 313 transitions. [2023-11-26 11:54:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:20,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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 69 [2023-11-26 11:54:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:20,507 INFO L225 Difference]: With dead ends: 259 [2023-11-26 11:54:20,507 INFO L226 Difference]: Without dead ends: 257 [2023-11-26 11:54:20,507 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 [2023-11-26 11:54:20,508 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 4 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:20,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 388 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-26 11:54:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2023-11-26 11:54:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 211 states have (on average 1.3270142180094786) internal successors, (280), 237 states have internal predecessors, (280), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2023-11-26 11:54:20,532 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 69 [2023-11-26 11:54:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:20,532 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 307 transitions. [2023-11-26 11:54:20,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-26 11:54:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 307 transitions. [2023-11-26 11:54:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:54:20,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:20,534 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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] [2023-11-26 11:54:20,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:54:20,535 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:20,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 538908361, now seen corresponding path program 1 times [2023-11-26 11:54:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356583800] [2023-11-26 11:54:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-26 11:54:20,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:20,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356583800] [2023-11-26 11:54:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356583800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777898891] [2023-11-26 11:54:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:20,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:20,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:20,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:54:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:21,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:54:21,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-26 11:54:21,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-26 11:54:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777898891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:21,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-26 11:54:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096953229] [2023-11-26 11:54:21,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:54:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:54:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:54:21,755 INFO L87 Difference]: Start difference. First operand 254 states and 307 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2023-11-26 11:54:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:22,223 INFO L93 Difference]: Finished difference Result 489 states and 604 transitions. [2023-11-26 11:54:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:54:22,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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 68 [2023-11-26 11:54:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:22,227 INFO L225 Difference]: With dead ends: 489 [2023-11-26 11:54:22,227 INFO L226 Difference]: Without dead ends: 289 [2023-11-26 11:54:22,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:54:22,230 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 6 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:22,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 957 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:54:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-26 11:54:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-26 11:54:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 247 states have (on average 1.2753036437246963) internal successors, (315), 272 states have internal predecessors, (315), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 342 transitions. [2023-11-26 11:54:22,257 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 342 transitions. Word has length 68 [2023-11-26 11:54:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:22,258 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 342 transitions. [2023-11-26 11:54:22,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2023-11-26 11:54:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 342 transitions. [2023-11-26 11:54:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 11:54:22,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:22,260 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] [2023-11-26 11:54:22,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:22,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:22,470 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:22,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -314805515, now seen corresponding path program 1 times [2023-11-26 11:54:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:22,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966179047] [2023-11-26 11:54:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:22,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:22,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966179047] [2023-11-26 11:54:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966179047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338150441] [2023-11-26 11:54:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:22,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:22,752 INFO L87 Difference]: Start difference. First operand 289 states and 342 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-26 11:54:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:23,138 INFO L93 Difference]: Finished difference Result 362 states and 427 transitions. [2023-11-26 11:54:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:54:23,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 71 [2023-11-26 11:54:23,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:23,144 INFO L225 Difference]: With dead ends: 362 [2023-11-26 11:54:23,144 INFO L226 Difference]: Without dead ends: 289 [2023-11-26 11:54:23,145 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 [2023-11-26 11:54:23,146 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:23,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 563 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:54:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-26 11:54:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-26 11:54:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 247 states have (on average 1.271255060728745) internal successors, (314), 272 states have internal predecessors, (314), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 341 transitions. [2023-11-26 11:54:23,168 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 341 transitions. Word has length 71 [2023-11-26 11:54:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:23,169 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 341 transitions. [2023-11-26 11:54:23,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-26 11:54:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 341 transitions. [2023-11-26 11:54:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:54:23,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:23,171 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-11-26 11:54:23,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:54:23,172 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:23,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash -184282119, now seen corresponding path program 1 times [2023-11-26 11:54:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10403819] [2023-11-26 11:54:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:23,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10403819] [2023-11-26 11:54:23,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10403819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:23,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993798535] [2023-11-26 11:54:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:23,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:23,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:23,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:23,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:54:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:24,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:24,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:24,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993798535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:24,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:24,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 11:54:24,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691620281] [2023-11-26 11:54:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:24,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:24,168 INFO L87 Difference]: Start difference. First operand 289 states and 341 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-26 11:54:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:24,334 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2023-11-26 11:54:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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 73 [2023-11-26 11:54:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:24,338 INFO L225 Difference]: With dead ends: 293 [2023-11-26 11:54:24,338 INFO L226 Difference]: Without dead ends: 292 [2023-11-26 11:54:24,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:24,339 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 10 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:24,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 385 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:54:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-26 11:54:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2023-11-26 11:54:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 247 states have (on average 1.2672064777327936) internal successors, (313), 271 states have internal predecessors, (313), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 340 transitions. [2023-11-26 11:54:24,359 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 340 transitions. Word has length 73 [2023-11-26 11:54:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:24,359 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 340 transitions. [2023-11-26 11:54:24,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2023-11-26 11:54:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 340 transitions. [2023-11-26 11:54:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 11:54:24,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:24,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:24,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 11:54:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:24,570 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:24,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1417778247, now seen corresponding path program 1 times [2023-11-26 11:54:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937294325] [2023-11-26 11:54:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937294325] [2023-11-26 11:54:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937294325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144152236] [2023-11-26 11:54:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:24,868 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:54:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:25,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:25,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:25,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:25,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144152236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:25,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:25,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:54:25,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067763369] [2023-11-26 11:54:25,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:25,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:25,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:25,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:25,581 INFO L87 Difference]: Start difference. First operand 288 states and 340 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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) [2023-11-26 11:54:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:26,216 INFO L93 Difference]: Finished difference Result 313 states and 377 transitions. [2023-11-26 11:54:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 74 [2023-11-26 11:54:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:26,220 INFO L225 Difference]: With dead ends: 313 [2023-11-26 11:54:26,220 INFO L226 Difference]: Without dead ends: 312 [2023-11-26 11:54:26,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:26,222 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 15 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:26,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 951 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:54:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-26 11:54:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 300. [2023-11-26 11:54:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 259 states have (on average 1.277992277992278) internal successors, (331), 283 states have internal predecessors, (331), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 358 transitions. [2023-11-26 11:54:26,245 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 358 transitions. Word has length 74 [2023-11-26 11:54:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 358 transitions. [2023-11-26 11:54:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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) [2023-11-26 11:54:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 358 transitions. [2023-11-26 11:54:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 11:54:26,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:26,250 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] [2023-11-26 11:54:26,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:26,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-26 11:54:26,460 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:26,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -476477925, now seen corresponding path program 1 times [2023-11-26 11:54:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609855633] [2023-11-26 11:54:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:54:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:54:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:27,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609855633] [2023-11-26 11:54:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609855633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:27,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853314924] [2023-11-26 11:54:27,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:27,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:27,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:27,125 INFO L87 Difference]: Start difference. First operand 300 states and 358 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:54:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:27,807 INFO L93 Difference]: Finished difference Result 301 states and 359 transitions. [2023-11-26 11:54:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-11-26 11:54:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:27,810 INFO L225 Difference]: With dead ends: 301 [2023-11-26 11:54:27,811 INFO L226 Difference]: Without dead ends: 299 [2023-11-26 11:54:27,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:27,812 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 44 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 410 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:54:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-26 11:54:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2023-11-26 11:54:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 281 states have internal predecessors, (329), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2023-11-26 11:54:27,836 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 76 [2023-11-26 11:54:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:27,837 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2023-11-26 11:54:27,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:54:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2023-11-26 11:54:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:54:27,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:27,839 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] [2023-11-26 11:54:27,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 11:54:27,840 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:27,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1885913618, now seen corresponding path program 1 times [2023-11-26 11:54:27,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:27,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973769160] [2023-11-26 11:54:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:27,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:54:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:54:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:54:28,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973769160] [2023-11-26 11:54:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973769160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876033401] [2023-11-26 11:54:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:28,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:28,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:28,608 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:28,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:54:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:29,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:54:29,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:54:29,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876033401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:29,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:29,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2023-11-26 11:54:29,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135882350] [2023-11-26 11:54:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:29,264 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:54:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:29,853 INFO L93 Difference]: Finished difference Result 474 states and 583 transitions. [2023-11-26 11:54:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2023-11-26 11:54:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:29,856 INFO L225 Difference]: With dead ends: 474 [2023-11-26 11:54:29,857 INFO L226 Difference]: Without dead ends: 296 [2023-11-26 11:54:29,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:54:29,858 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 69 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:29,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 818 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:54:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-26 11:54:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2023-11-26 11:54:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 257 states have (on average 1.2684824902723735) internal successors, (326), 279 states have internal predecessors, (326), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 353 transitions. [2023-11-26 11:54:29,877 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 353 transitions. Word has length 77 [2023-11-26 11:54:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:29,877 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 353 transitions. [2023-11-26 11:54:29,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:54:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 353 transitions. [2023-11-26 11:54:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 11:54:29,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:29,879 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] [2023-11-26 11:54:29,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:54:30,097 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:30,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash -836203322, now seen corresponding path program 1 times [2023-11-26 11:54:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980110944] [2023-11-26 11:54:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:54:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:30,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980110944] [2023-11-26 11:54:30,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980110944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:30,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562809899] [2023-11-26 11:54:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:30,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:30,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:30,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:54:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:30,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:30,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:54:30,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:54:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562809899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:30,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:54:30,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067713264] [2023-11-26 11:54:30,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:30,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:30,980 INFO L87 Difference]: Start difference. First operand 296 states and 353 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-26 11:54:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:31,289 INFO L93 Difference]: Finished difference Result 306 states and 365 transitions. [2023-11-26 11:54:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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 87 [2023-11-26 11:54:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:31,291 INFO L225 Difference]: With dead ends: 306 [2023-11-26 11:54:31,292 INFO L226 Difference]: Without dead ends: 305 [2023-11-26 11:54:31,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:31,293 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:31,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 957 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-26 11:54:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-26 11:54:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 266 states have (on average 1.2593984962406015) internal successors, (335), 288 states have internal predecessors, (335), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 362 transitions. [2023-11-26 11:54:31,311 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 362 transitions. Word has length 87 [2023-11-26 11:54:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:31,311 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 362 transitions. [2023-11-26 11:54:31,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-26 11:54:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 362 transitions. [2023-11-26 11:54:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 11:54:31,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:31,313 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] [2023-11-26 11:54:31,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:54:31,522 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:31,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1805047130, now seen corresponding path program 2 times [2023-11-26 11:54:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:31,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96818519] [2023-11-26 11:54:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:31,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:54:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:54:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96818519] [2023-11-26 11:54:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96818519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679618326] [2023-11-26 11:54:32,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:54:32,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:32,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:32,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:54:32,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:54:32,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:54:32,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:54:32,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:54:32,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:54:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:54:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679618326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:54:32,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:54:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-26 11:54:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765485281] [2023-11-26 11:54:32,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:54:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:32,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:32,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:32,767 INFO L87 Difference]: Start difference. First operand 305 states and 362 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-11-26 11:54:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:33,069 INFO L93 Difference]: Finished difference Result 305 states and 362 transitions. [2023-11-26 11:54:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 96 [2023-11-26 11:54:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:33,072 INFO L225 Difference]: With dead ends: 305 [2023-11-26 11:54:33,072 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 11:54:33,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:33,073 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 89 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:33,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 684 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:54:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 11:54:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-26 11:54:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 250 states have (on average 1.268) internal successors, (317), 271 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:54:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 344 transitions. [2023-11-26 11:54:33,091 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 344 transitions. Word has length 96 [2023-11-26 11:54:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:33,092 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 344 transitions. [2023-11-26 11:54:33,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-11-26 11:54:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 344 transitions. [2023-11-26 11:54:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 11:54:33,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:33,095 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:33,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79eb1fbf-74e6-46a7-8e5c-e77c310490b0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:54:33,304 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-26 11:54:33,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash 89692590, now seen corresponding path program 1 times [2023-11-26 11:54:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807515800] [2023-11-26 11:54:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat