./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/du-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/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_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/du-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/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_725e9319-3f05-454b-ab64-de22d66cc307/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 ce5a5150794f26ae689cf42e8d4fe19a475595db60f71953dedd9d34b6b2f115 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:58,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:58,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 12:05:58,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:58,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:58,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:58,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:58,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:58,195 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:58,200 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:58,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:58,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:58,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:58,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:58,203 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:58,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:58,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:58,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:58,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:58,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:58,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:58,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:58,208 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:05:58,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:58,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:58,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:58,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:58,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:58,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:58,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:58,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:58,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:58,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:58,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:58,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:58,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:58,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:58,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:58,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:58,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:58,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:58,216 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_725e9319-3f05-454b-ab64-de22d66cc307/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5a5150794f26ae689cf42e8d4fe19a475595db60f71953dedd9d34b6b2f115 [2023-11-26 12:05:58,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:58,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:58,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:58,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:58,603 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:58,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/du-1.i [2023-11-26 12:06:01,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:02,228 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:02,229 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/sv-benchmarks/c/busybox-1.22.0/du-1.i [2023-11-26 12:06:02,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/data/bae93ca2e/bc84511bbb98484da8a6264174d46d17/FLAGd57421164 [2023-11-26 12:06:02,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/data/bae93ca2e/bc84511bbb98484da8a6264174d46d17 [2023-11-26 12:06:02,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:02,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:02,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:02,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:02,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:02,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:02" (1/1) ... [2023-11-26 12:06:02,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9fc2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:02, skipping insertion in model container [2023-11-26 12:06:02,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:02" (1/1) ... [2023-11-26 12:06:02,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:04,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:04,618 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:04,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:05,093 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:05,094 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:05,094 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:05,094 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:05,102 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:05,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05 WrapperNode [2023-11-26 12:06:05,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:05,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:05,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:05,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:05,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,374 INFO L138 Inliner]: procedures = 670, calls = 592, calls flagged for inlining = 35, calls inlined = 33, statements flattened = 2275 [2023-11-26 12:06:05,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:05,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:05,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:05,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:05,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,440 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 12:06:05,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:05,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:05,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:05,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:05,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (1/1) ... [2023-11-26 12:06:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:05,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:05,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-26 12:06:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-26 12:06:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-26 12:06:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure du [2023-11-26 12:06:05,657 INFO L138 BoogieDeclarations]: Found implementation of procedure du [2023-11-26 12:06:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-26 12:06:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:06:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-26 12:06:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-26 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure print [2023-11-26 12:06:05,660 INFO L138 BoogieDeclarations]: Found implementation of procedure print [2023-11-26 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 12:06:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-26 12:06:05,661 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-26 12:06:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 12:06:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:06:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:06:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 12:06:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 12:06:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:05,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 12:06:05,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 12:06:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-26 12:06:05,664 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-26 12:06:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 12:06:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 12:06:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-26 12:06:05,665 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-26 12:06:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-26 12:06:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-26 12:06:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-26 12:06:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-26 12:06:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:06:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:06:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 12:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 12:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-26 12:06:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-26 12:06:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-26 12:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-26 12:06:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-26 12:06:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:06:06,261 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:06,264 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:08,825 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:08,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:08,939 INFO L309 CfgBuilder]: Removed 34 assume(true) statements. [2023-11-26 12:06:08,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:08 BoogieIcfgContainer [2023-11-26 12:06:08,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:08,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:08,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:08,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:08,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:02" (1/3) ... [2023-11-26 12:06:08,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e79c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:08, skipping insertion in model container [2023-11-26 12:06:08,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:05" (2/3) ... [2023-11-26 12:06:08,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e79c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:08, skipping insertion in model container [2023-11-26 12:06:08,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:08" (3/3) ... [2023-11-26 12:06:08,953 INFO L112 eAbstractionObserver]: Analyzing ICFG du-1.i [2023-11-26 12:06:08,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:08,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-26 12:06:09,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:09,069 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;@266f130c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:09,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-26 12:06:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 633 states, 508 states have (on average 1.718503937007874) internal successors, (873), 578 states have internal predecessors, (873), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-26 12:06:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:06:09,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:09,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:06:09,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:09,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2189134, now seen corresponding path program 1 times [2023-11-26 12:06:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186369737] [2023-11-26 12:06:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:09,701 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 12:06:09,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186369737] [2023-11-26 12:06:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186369737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:09,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:09,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:06:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033228999] [2023-11-26 12:06:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:09,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:09,750 INFO L87 Difference]: Start difference. First operand has 633 states, 508 states have (on average 1.718503937007874) internal successors, (873), 578 states have internal predecessors, (873), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) 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 12:06:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:10,092 INFO L93 Difference]: Finished difference Result 1259 states and 1947 transitions. [2023-11-26 12:06:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:10,095 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 12:06:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:10,110 INFO L225 Difference]: With dead ends: 1259 [2023-11-26 12:06:10,110 INFO L226 Difference]: Without dead ends: 627 [2023-11-26 12:06:10,120 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 12:06:10,124 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:10,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1728 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:10,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-11-26 12:06:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2023-11-26 12:06:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 504 states have (on average 1.6369047619047619) internal successors, (825), 578 states have internal predecessors, (825), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 905 transitions. [2023-11-26 12:06:10,225 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 905 transitions. Word has length 3 [2023-11-26 12:06:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:10,225 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 905 transitions. [2023-11-26 12:06:10,226 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 12:06:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 905 transitions. [2023-11-26 12:06:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 12:06:10,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:10,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:06:10,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:10,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:10,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 792790692, now seen corresponding path program 1 times [2023-11-26 12:06:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:10,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647451753] [2023-11-26 12:06:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:10,413 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 12:06:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:10,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647451753] [2023-11-26 12:06:10,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647451753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775306080] [2023-11-26 12:06:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:10,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:10,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:06:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:10,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:10,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:10,823 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 12:06:10,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775306080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:10,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-26 12:06:10,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251156687] [2023-11-26 12:06:10,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:10,827 INFO L87 Difference]: Start difference. First operand 627 states and 905 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 12:06:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:11,107 INFO L93 Difference]: Finished difference Result 627 states and 905 transitions. [2023-11-26 12:06:11,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:11,109 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 12:06:11,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:11,116 INFO L225 Difference]: With dead ends: 627 [2023-11-26 12:06:11,116 INFO L226 Difference]: Without dead ends: 626 [2023-11-26 12:06:11,117 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 12:06:11,131 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 3 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:11,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2581 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-26 12:06:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-11-26 12:06:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 504 states have (on average 1.6349206349206349) internal successors, (824), 577 states have internal predecessors, (824), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 904 transitions. [2023-11-26 12:06:11,177 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 904 transitions. Word has length 6 [2023-11-26 12:06:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:11,177 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 904 transitions. [2023-11-26 12:06:11,177 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 12:06:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 904 transitions. [2023-11-26 12:06:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 12:06:11,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:11,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 12:06:11,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:11,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:11,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1193291509, now seen corresponding path program 1 times [2023-11-26 12:06:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687820112] [2023-11-26 12:06:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:11,603 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 12:06:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687820112] [2023-11-26 12:06:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687820112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:11,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:11,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:11,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965598957] [2023-11-26 12:06:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:11,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:11,609 INFO L87 Difference]: Start difference. First operand 626 states and 904 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 12:06:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:11,804 INFO L93 Difference]: Finished difference Result 626 states and 904 transitions. [2023-11-26 12:06:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:11,807 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 12:06:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:11,812 INFO L225 Difference]: With dead ends: 626 [2023-11-26 12:06:11,812 INFO L226 Difference]: Without dead ends: 625 [2023-11-26 12:06:11,813 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 12:06:11,814 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 0 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1722 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-11-26 12:06:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 623. [2023-11-26 12:06:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 502 states have (on average 1.6354581673306774) internal successors, (821), 574 states have internal predecessors, (821), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 901 transitions. [2023-11-26 12:06:11,843 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 901 transitions. Word has length 7 [2023-11-26 12:06:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:11,844 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 901 transitions. [2023-11-26 12:06:11,844 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 12:06:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 901 transitions. [2023-11-26 12:06:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 12:06:11,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:11,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:11,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:11,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:11,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:11,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1923887344, now seen corresponding path program 1 times [2023-11-26 12:06:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989638804] [2023-11-26 12:06:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:06:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:12,051 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 12:06:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989638804] [2023-11-26 12:06:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989638804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599792569] [2023-11-26 12:06:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:12,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:12,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:12,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:12,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:06:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:12,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:12,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:12,433 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 12:06:12,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599792569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 12:06:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13488535] [2023-11-26 12:06:12,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:12,437 INFO L87 Difference]: Start difference. First operand 623 states and 901 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 12:06:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:12,644 INFO L93 Difference]: Finished difference Result 623 states and 901 transitions. [2023-11-26 12:06:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:12,646 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 12:06:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:12,650 INFO L225 Difference]: With dead ends: 623 [2023-11-26 12:06:12,651 INFO L226 Difference]: Without dead ends: 621 [2023-11-26 12:06:12,651 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 12:06:12,652 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 493 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:12,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1227 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-11-26 12:06:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2023-11-26 12:06:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 502 states have (on average 1.6314741035856575) internal successors, (819), 572 states have internal predecessors, (819), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 899 transitions. [2023-11-26 12:06:12,681 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 899 transitions. Word has length 12 [2023-11-26 12:06:12,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:12,683 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 899 transitions. [2023-11-26 12:06:12,683 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 12:06:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 899 transitions. [2023-11-26 12:06:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 12:06:12,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:12,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:12,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:12,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:12,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:12,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash -489033656, now seen corresponding path program 1 times [2023-11-26 12:06:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091189241] [2023-11-26 12:06:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 12:06:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:13,188 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 12:06:13,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:13,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091189241] [2023-11-26 12:06:13,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091189241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:13,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101102328] [2023-11-26 12:06:13,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:13,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:13,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:13,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:06:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:13,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:13,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:13,577 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 12:06:13,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:13,608 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 12:06:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101102328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:13,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 12:06:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851423225] [2023-11-26 12:06:13,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:13,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:06:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:06:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:13,611 INFO L87 Difference]: Start difference. First operand 621 states and 899 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 12:06:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:13,871 INFO L93 Difference]: Finished difference Result 1246 states and 1804 transitions. [2023-11-26 12:06:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:13,872 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 12:06:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:13,877 INFO L225 Difference]: With dead ends: 1246 [2023-11-26 12:06:13,877 INFO L226 Difference]: Without dead ends: 630 [2023-11-26 12:06:13,879 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 12:06:13,880 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 4 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:13,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2576 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-26 12:06:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2023-11-26 12:06:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 511 states have (on average 1.6203522504892367) internal successors, (828), 581 states have internal predecessors, (828), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 908 transitions. [2023-11-26 12:06:13,909 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 908 transitions. Word has length 13 [2023-11-26 12:06:13,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:13,909 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 908 transitions. [2023-11-26 12:06:13,909 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 12:06:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 908 transitions. [2023-11-26 12:06:13,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 12:06:13,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:13,911 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:13,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:14,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -299791394, now seen corresponding path program 2 times [2023-11-26 12:06:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320037024] [2023-11-26 12:06:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:06:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:14,466 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 12:06:14,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320037024] [2023-11-26 12:06:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320037024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671353393] [2023-11-26 12:06:14,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:14,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:14,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:14,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:06:14,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:14,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:14,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:14,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:14,942 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 12:06:14,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:14,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671353393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:14,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:14,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-26 12:06:14,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847909432] [2023-11-26 12:06:14,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:14,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:14,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:14,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:14,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:06:14,945 INFO L87 Difference]: Start difference. First operand 630 states and 908 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 12:06:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:15,396 INFO L93 Difference]: Finished difference Result 630 states and 908 transitions. [2023-11-26 12:06:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:06:15,398 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 12:06:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:15,403 INFO L225 Difference]: With dead ends: 630 [2023-11-26 12:06:15,404 INFO L226 Difference]: Without dead ends: 628 [2023-11-26 12:06:15,404 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 12:06:15,405 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 492 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:15,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 2873 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:06:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-26 12:06:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2023-11-26 12:06:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 511 states have (on average 1.6164383561643836) internal successors, (826), 579 states have internal predecessors, (826), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 906 transitions. [2023-11-26 12:06:15,441 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 906 transitions. Word has length 22 [2023-11-26 12:06:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:15,441 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 906 transitions. [2023-11-26 12:06:15,442 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 12:06:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 906 transitions. [2023-11-26 12:06:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 12:06:15,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:15,443 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 12:06:15,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:15,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:06:15,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:15,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1712450521, now seen corresponding path program 1 times [2023-11-26 12:06:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793469140] [2023-11-26 12:06:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:06:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:15,890 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 12:06:15,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793469140] [2023-11-26 12:06:15,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793469140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:15,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:15,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:15,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858854699] [2023-11-26 12:06:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:15,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:15,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:15,893 INFO L87 Difference]: Start difference. First operand 628 states and 906 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 12:06:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:16,112 INFO L93 Difference]: Finished difference Result 1239 states and 1796 transitions. [2023-11-26 12:06:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:16,113 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 12:06:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:16,117 INFO L225 Difference]: With dead ends: 1239 [2023-11-26 12:06:16,118 INFO L226 Difference]: Without dead ends: 631 [2023-11-26 12:06:16,120 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 12:06:16,120 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:16,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1711 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-11-26 12:06:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2023-11-26 12:06:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 514 states have (on average 1.61284046692607) internal successors, (829), 582 states have internal predecessors, (829), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 909 transitions. [2023-11-26 12:06:16,158 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 909 transitions. Word has length 27 [2023-11-26 12:06:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:16,159 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 909 transitions. [2023-11-26 12:06:16,159 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 12:06:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 909 transitions. [2023-11-26 12:06:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 12:06:16,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:16,161 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 12:06:16,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:06:16,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:16,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash 8913677, now seen corresponding path program 1 times [2023-11-26 12:06:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870078732] [2023-11-26 12:06:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 12:06:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:16,393 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 12:06:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870078732] [2023-11-26 12:06:16,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870078732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275114151] [2023-11-26 12:06:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:16,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:06:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:16,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:16,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:16,894 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 12:06:16,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:16,998 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 12:06:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275114151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:16,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-26 12:06:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797201868] [2023-11-26 12:06:16,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:06:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:17,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:06:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:06:17,001 INFO L87 Difference]: Start difference. First operand 631 states and 909 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 12:06:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:17,443 INFO L93 Difference]: Finished difference Result 1265 states and 1827 transitions. [2023-11-26 12:06:17,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:06:17,444 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 12:06:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:17,449 INFO L225 Difference]: With dead ends: 1265 [2023-11-26 12:06:17,449 INFO L226 Difference]: Without dead ends: 648 [2023-11-26 12:06:17,451 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 12:06:17,453 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 7 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:17,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4252 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:06:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-11-26 12:06:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2023-11-26 12:06:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 532 states have (on average 1.5902255639097744) internal successors, (846), 599 states have internal predecessors, (846), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 926 transitions. [2023-11-26 12:06:17,485 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 926 transitions. Word has length 30 [2023-11-26 12:06:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:17,485 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 926 transitions. [2023-11-26 12:06:17,485 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 12:06:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 926 transitions. [2023-11-26 12:06:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 12:06:17,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:17,489 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 12:06:17,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:17,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 12:06:17,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:17,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash -313633821, now seen corresponding path program 1 times [2023-11-26 12:06:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317815312] [2023-11-26 12:06:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:17,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:17,983 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 12:06:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317815312] [2023-11-26 12:06:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317815312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546749001] [2023-11-26 12:06:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:17,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:17,986 INFO L87 Difference]: Start difference. First operand 648 states and 926 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 12:06:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:18,196 INFO L93 Difference]: Finished difference Result 662 states and 942 transitions. [2023-11-26 12:06:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:18,197 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 12:06:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:18,201 INFO L225 Difference]: With dead ends: 662 [2023-11-26 12:06:18,201 INFO L226 Difference]: Without dead ends: 660 [2023-11-26 12:06:18,202 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 12:06:18,202 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 3 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:18,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1706 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-11-26 12:06:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 658. [2023-11-26 12:06:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 542 states have (on average 1.584870848708487) internal successors, (859), 609 states have internal predecessors, (859), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 939 transitions. [2023-11-26 12:06:18,231 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 939 transitions. Word has length 49 [2023-11-26 12:06:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:18,232 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 939 transitions. [2023-11-26 12:06:18,232 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 12:06:18,233 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 939 transitions. [2023-11-26 12:06:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 12:06:18,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:18,240 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 12:06:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:06:18,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:18,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash -313632092, now seen corresponding path program 1 times [2023-11-26 12:06:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932140269] [2023-11-26 12:06:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:18,440 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 12:06:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932140269] [2023-11-26 12:06:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932140269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:18,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:18,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13683386] [2023-11-26 12:06:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:18,443 INFO L87 Difference]: Start difference. First operand 658 states and 939 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 12:06:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:18,648 INFO L93 Difference]: Finished difference Result 658 states and 939 transitions. [2023-11-26 12:06:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:18,649 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 12:06:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:18,654 INFO L225 Difference]: With dead ends: 658 [2023-11-26 12:06:18,654 INFO L226 Difference]: Without dead ends: 657 [2023-11-26 12:06:18,654 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 12:06:18,655 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 0 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:18,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1709 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-26 12:06:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 653. [2023-11-26 12:06:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 538 states have (on average 1.5855018587360594) internal successors, (853), 604 states have internal predecessors, (853), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 933 transitions. [2023-11-26 12:06:18,706 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 933 transitions. Word has length 49 [2023-11-26 12:06:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:18,708 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 933 transitions. [2023-11-26 12:06:18,708 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 12:06:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 933 transitions. [2023-11-26 12:06:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 12:06:18,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:18,710 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] [2023-11-26 12:06:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:06:18,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:18,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -732412369, now seen corresponding path program 1 times [2023-11-26 12:06:18,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:18,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205086279] [2023-11-26 12:06:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,024 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 12:06:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205086279] [2023-11-26 12:06:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205086279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:19,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66017820] [2023-11-26 12:06:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:19,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:19,027 INFO L87 Difference]: Start difference. First operand 653 states and 933 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 12:06:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:19,346 INFO L93 Difference]: Finished difference Result 1562 states and 2283 transitions. [2023-11-26 12:06:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 12:06:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:19,354 INFO L225 Difference]: With dead ends: 1562 [2023-11-26 12:06:19,354 INFO L226 Difference]: Without dead ends: 969 [2023-11-26 12:06:19,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:06:19,359 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 463 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:19,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 2678 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:06:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-11-26 12:06:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 655. [2023-11-26 12:06:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 540 states have (on average 1.5833333333333333) internal successors, (855), 606 states have internal predecessors, (855), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 935 transitions. [2023-11-26 12:06:19,398 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 935 transitions. Word has length 51 [2023-11-26 12:06:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:19,399 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 935 transitions. [2023-11-26 12:06:19,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 12:06:19,400 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 935 transitions. [2023-11-26 12:06:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 12:06:19,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:19,401 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] [2023-11-26 12:06:19,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:06:19,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:19,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash -730565327, now seen corresponding path program 1 times [2023-11-26 12:06:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128470597] [2023-11-26 12:06:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:19,725 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 12:06:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128470597] [2023-11-26 12:06:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128470597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229086757] [2023-11-26 12:06:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:19,731 INFO L87 Difference]: Start difference. First operand 655 states and 935 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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 12:06:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:19,982 INFO L93 Difference]: Finished difference Result 926 states and 1343 transitions. [2023-11-26 12:06:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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 12:06:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:19,989 INFO L225 Difference]: With dead ends: 926 [2023-11-26 12:06:19,989 INFO L226 Difference]: Without dead ends: 924 [2023-11-26 12:06:19,990 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 12:06:19,990 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 386 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1694 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-11-26 12:06:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 659. [2023-11-26 12:06:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 544 states have (on average 1.5808823529411764) internal successors, (860), 610 states have internal predecessors, (860), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 940 transitions. [2023-11-26 12:06:20,027 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 940 transitions. Word has length 51 [2023-11-26 12:06:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:20,027 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 940 transitions. [2023-11-26 12:06:20,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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 12:06:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 940 transitions. [2023-11-26 12:06:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 12:06:20,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:20,029 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] [2023-11-26 12:06:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:06:20,030 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:20,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -276407030, now seen corresponding path program 1 times [2023-11-26 12:06:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854358141] [2023-11-26 12:06:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:20,297 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 12:06:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854358141] [2023-11-26 12:06:20,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854358141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500312856] [2023-11-26 12:06:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:20,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:20,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:20,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:06:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:20,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:20,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:20,816 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 12:06:20,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500312856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:20,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 12:06:20,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709833991] [2023-11-26 12:06:20,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:20,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:20,819 INFO L87 Difference]: Start difference. First operand 659 states and 940 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 12:06:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:21,107 INFO L93 Difference]: Finished difference Result 927 states and 1345 transitions. [2023-11-26 12:06:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 55 [2023-11-26 12:06:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:21,114 INFO L225 Difference]: With dead ends: 927 [2023-11-26 12:06:21,114 INFO L226 Difference]: Without dead ends: 926 [2023-11-26 12:06:21,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 12:06:21,116 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 773 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:21,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2084 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:06:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-26 12:06:21,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 658. [2023-11-26 12:06:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 544 states have (on average 1.5790441176470589) internal successors, (859), 609 states have internal predecessors, (859), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 939 transitions. [2023-11-26 12:06:21,153 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 939 transitions. Word has length 55 [2023-11-26 12:06:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:21,154 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 939 transitions. [2023-11-26 12:06:21,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 12:06:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 939 transitions. [2023-11-26 12:06:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 12:06:21,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:21,155 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] [2023-11-26 12:06:21,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:21,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:06:21,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:21,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 21317552, now seen corresponding path program 1 times [2023-11-26 12:06:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700778206] [2023-11-26 12:06:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:21,620 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 12:06:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:21,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700778206] [2023-11-26 12:06:21,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700778206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:21,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606700105] [2023-11-26 12:06:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:21,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:21,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:21,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:21,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:06:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:22,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:22,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:22,181 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 12:06:22,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:22,223 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 12:06:22,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606700105] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:22,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 12:06:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55407149] [2023-11-26 12:06:22,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:06:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:06:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:22,226 INFO L87 Difference]: Start difference. First operand 658 states and 939 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 12:06:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:22,708 INFO L93 Difference]: Finished difference Result 1731 states and 2561 transitions. [2023-11-26 12:06:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 56 [2023-11-26 12:06:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:22,718 INFO L225 Difference]: With dead ends: 1731 [2023-11-26 12:06:22,719 INFO L226 Difference]: Without dead ends: 1730 [2023-11-26 12:06:22,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 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 12:06:22,721 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 2312 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:22,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 3649 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:06:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-11-26 12:06:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 670. [2023-11-26 12:06:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 556 states have (on average 1.5719424460431655) internal successors, (874), 621 states have internal predecessors, (874), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 954 transitions. [2023-11-26 12:06:22,766 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 954 transitions. Word has length 56 [2023-11-26 12:06:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:22,767 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 954 transitions. [2023-11-26 12:06:22,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 12:06:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 954 transitions. [2023-11-26 12:06:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:06:22,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:22,768 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 12:06:22,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:22,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:06:22,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:22,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 552355596, now seen corresponding path program 1 times [2023-11-26 12:06:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170077245] [2023-11-26 12:06:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:23,204 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 12:06:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170077245] [2023-11-26 12:06:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170077245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725219993] [2023-11-26 12:06:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:23,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:23,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:23,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:06:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:23,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:23,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:23,779 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 12:06:23,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:23,804 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 12:06:23,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725219993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:23,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:23,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 12:06:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076635016] [2023-11-26 12:06:23,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:23,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:06:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:23,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:06:23,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:23,806 INFO L87 Difference]: Start difference. First operand 670 states and 954 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 12:06:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:24,140 INFO L93 Difference]: Finished difference Result 1315 states and 1885 transitions. [2023-11-26 12:06:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:24,141 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 12:06:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:24,145 INFO L225 Difference]: With dead ends: 1315 [2023-11-26 12:06:24,146 INFO L226 Difference]: Without dead ends: 688 [2023-11-26 12:06:24,148 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 12:06:24,148 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 4 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3411 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:06:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-26 12:06:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2023-11-26 12:06:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 574 states have (on average 1.5540069686411149) internal successors, (892), 639 states have internal predecessors, (892), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 12:06:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 972 transitions. [2023-11-26 12:06:24,189 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 972 transitions. Word has length 57 [2023-11-26 12:06:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:24,190 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 972 transitions. [2023-11-26 12:06:24,190 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 12:06:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 972 transitions. [2023-11-26 12:06:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 12:06:24,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:24,191 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] [2023-11-26 12:06:24,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:24,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:06:24,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:24,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1121636229, now seen corresponding path program 1 times [2023-11-26 12:06:24,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362777744] [2023-11-26 12:06:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 12:06:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:24,696 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 12:06:24,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362777744] [2023-11-26 12:06:24,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362777744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:24,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:24,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:24,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410947498] [2023-11-26 12:06:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:24,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:24,699 INFO L87 Difference]: Start difference. First operand 688 states and 972 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:06:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:26,981 INFO L93 Difference]: Finished difference Result 1388 states and 1998 transitions. [2023-11-26 12:06:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:26,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-26 12:06:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:26,990 INFO L225 Difference]: With dead ends: 1388 [2023-11-26 12:06:26,990 INFO L226 Difference]: Without dead ends: 809 [2023-11-26 12:06:26,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:06:26,993 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 196 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:26,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2150 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 12:06:26,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2023-11-26 12:06:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 728. [2023-11-26 12:06:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 613 states have (on average 1.5432300163132138) internal successors, (946), 678 states have internal predecessors, (946), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1028 transitions. [2023-11-26 12:06:27,041 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1028 transitions. Word has length 64 [2023-11-26 12:06:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:27,041 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1028 transitions. [2023-11-26 12:06:27,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:06:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1028 transitions. [2023-11-26 12:06:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 12:06:27,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:27,043 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 12:06:27,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:06:27,043 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:27,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -144345366, now seen corresponding path program 1 times [2023-11-26 12:06:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948957634] [2023-11-26 12:06:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 12:06:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:27,294 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 12:06:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948957634] [2023-11-26 12:06:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948957634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:27,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:27,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949499411] [2023-11-26 12:06:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:27,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:27,298 INFO L87 Difference]: Start difference. First operand 728 states and 1028 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:29,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:06:31,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:06:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:31,857 INFO L93 Difference]: Finished difference Result 756 states and 1065 transitions. [2023-11-26 12:06:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2023-11-26 12:06:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:31,864 INFO L225 Difference]: With dead ends: 756 [2023-11-26 12:06:31,864 INFO L226 Difference]: Without dead ends: 754 [2023-11-26 12:06:31,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:06:31,865 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 76 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:31,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2220 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-26 12:06:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-26 12:06:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 728. [2023-11-26 12:06:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 613 states have (on average 1.5399673735725938) internal successors, (944), 678 states have internal predecessors, (944), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1026 transitions. [2023-11-26 12:06:31,904 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1026 transitions. Word has length 66 [2023-11-26 12:06:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:31,905 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1026 transitions. [2023-11-26 12:06:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1026 transitions. [2023-11-26 12:06:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 12:06:31,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:31,906 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:31,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:06:31,907 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1468556155, now seen corresponding path program 2 times [2023-11-26 12:06:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:31,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477055671] [2023-11-26 12:06:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 12:06:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477055671] [2023-11-26 12:06:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477055671] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:32,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333328957] [2023-11-26 12:06:32,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:32,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:32,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:32,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:32,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:06:32,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:32,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:32,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:06:32,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-26 12:06:32,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333328957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:32,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-26 12:06:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134061275] [2023-11-26 12:06:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:06:33,000 INFO L87 Difference]: Start difference. First operand 728 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 12:06:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:33,540 INFO L93 Difference]: Finished difference Result 1382 states and 1972 transitions. [2023-11-26 12:06:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:33,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 12:06:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:33,545 INFO L225 Difference]: With dead ends: 1382 [2023-11-26 12:06:33,545 INFO L226 Difference]: Without dead ends: 728 [2023-11-26 12:06:33,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:06:33,548 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 501 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:33,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 3316 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:06:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-11-26 12:06:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2023-11-26 12:06:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 613 states have (on average 1.5383360522022838) internal successors, (943), 678 states have internal predecessors, (943), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1025 transitions. [2023-11-26 12:06:33,585 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1025 transitions. Word has length 68 [2023-11-26 12:06:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:33,586 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1025 transitions. [2023-11-26 12:06:33,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 12:06:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1025 transitions. [2023-11-26 12:06:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 12:06:33,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:33,587 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:33,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:33,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:06:33,796 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:33,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2029523046, now seen corresponding path program 2 times [2023-11-26 12:06:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437016432] [2023-11-26 12:06:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-26 12:06:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437016432] [2023-11-26 12:06:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437016432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186223778] [2023-11-26 12:06:34,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:34,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:34,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:34,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:06:34,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:06:34,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:34,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:34,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-26 12:06:34,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-26 12:06:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186223778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:35,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:35,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-26 12:06:35,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666131568] [2023-11-26 12:06:35,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:35,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:06:35,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:06:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:06:35,073 INFO L87 Difference]: Start difference. First operand 728 states and 1025 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 12:06:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:35,879 INFO L93 Difference]: Finished difference Result 1439 states and 2043 transitions. [2023-11-26 12:06:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 12:06:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 75 [2023-11-26 12:06:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:35,885 INFO L225 Difference]: With dead ends: 1439 [2023-11-26 12:06:35,885 INFO L226 Difference]: Without dead ends: 763 [2023-11-26 12:06:35,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 12:06:35,888 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 11 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:35,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4239 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:06:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-11-26 12:06:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2023-11-26 12:06:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 649 states have (on average 1.5069337442218798) internal successors, (978), 713 states have internal predecessors, (978), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1060 transitions. [2023-11-26 12:06:35,931 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1060 transitions. Word has length 75 [2023-11-26 12:06:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:35,932 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 1060 transitions. [2023-11-26 12:06:35,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 12:06:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1060 transitions. [2023-11-26 12:06:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 12:06:35,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:35,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:35,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:36,143 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:36,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1854536298, now seen corresponding path program 1 times [2023-11-26 12:06:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54739128] [2023-11-26 12:06:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:36,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54739128] [2023-11-26 12:06:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54739128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40153043] [2023-11-26 12:06:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:36,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:36,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:06:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:37,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:37,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:37,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40153043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:37,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-26 12:06:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296372036] [2023-11-26 12:06:37,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 12:06:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 12:06:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:06:37,490 INFO L87 Difference]: Start difference. First operand 763 states and 1060 transitions. Second operand has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 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 12:06:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:38,564 INFO L93 Difference]: Finished difference Result 3838 states and 5646 transitions. [2023-11-26 12:06:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:06:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 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 103 [2023-11-26 12:06:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:38,590 INFO L225 Difference]: With dead ends: 3838 [2023-11-26 12:06:38,590 INFO L226 Difference]: Without dead ends: 3837 [2023-11-26 12:06:38,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:06:38,593 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 6092 mSDsluCounter, 6815 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6152 SdHoareTripleChecker+Valid, 7664 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:38,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6152 Valid, 7664 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:06:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2023-11-26 12:06:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 787. [2023-11-26 12:06:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 673 states have (on average 1.4977711738484398) internal successors, (1008), 737 states have internal predecessors, (1008), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:38,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1090 transitions. [2023-11-26 12:06:38,672 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1090 transitions. Word has length 103 [2023-11-26 12:06:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:38,673 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1090 transitions. [2023-11-26 12:06:38,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 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 12:06:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1090 transitions. [2023-11-26 12:06:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 12:06:38,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:38,675 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:38,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 12:06:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_725e9319-3f05-454b-ab64-de22d66cc307/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:38,884 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:38,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -931554898, now seen corresponding path program 1 times [2023-11-26 12:06:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905810326] [2023-11-26 12:06:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 12:06:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905810326] [2023-11-26 12:06:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905810326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284221539] [2023-11-26 12:06:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:39,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:39,200 INFO L87 Difference]: Start difference. First operand 787 states and 1090 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:42,096 INFO L93 Difference]: Finished difference Result 1413 states and 2022 transitions. [2023-11-26 12:06:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:42,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2023-11-26 12:06:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:42,103 INFO L225 Difference]: With dead ends: 1413 [2023-11-26 12:06:42,103 INFO L226 Difference]: Without dead ends: 886 [2023-11-26 12:06:42,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:06:42,106 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 190 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:42,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 2268 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 12:06:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-26 12:06:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 790. [2023-11-26 12:06:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 678 states have (on average 1.4926253687315634) internal successors, (1012), 740 states have internal predecessors, (1012), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1094 transitions. [2023-11-26 12:06:42,155 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1094 transitions. Word has length 108 [2023-11-26 12:06:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:42,156 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1094 transitions. [2023-11-26 12:06:42,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1094 transitions. [2023-11-26 12:06:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 12:06:42,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:42,158 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 12:06:42,158 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash -930922407, now seen corresponding path program 1 times [2023-11-26 12:06:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057958559] [2023-11-26 12:06:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 12:06:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:42,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:42,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057958559] [2023-11-26 12:06:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057958559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868303153] [2023-11-26 12:06:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:42,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:42,502 INFO L87 Difference]: Start difference. First operand 790 states and 1094 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:45,180 INFO L93 Difference]: Finished difference Result 819 states and 1135 transitions. [2023-11-26 12:06:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:45,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2023-11-26 12:06:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:45,189 INFO L225 Difference]: With dead ends: 819 [2023-11-26 12:06:45,189 INFO L226 Difference]: Without dead ends: 816 [2023-11-26 12:06:45,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:06:45,190 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 414 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:45,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1772 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 12:06:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-26 12:06:45,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 787. [2023-11-26 12:06:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 678 states have (on average 1.4882005899705015) internal successors, (1009), 737 states have internal predecessors, (1009), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 12:06:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1091 transitions. [2023-11-26 12:06:45,239 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1091 transitions. Word has length 108 [2023-11-26 12:06:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:45,239 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1091 transitions. [2023-11-26 12:06:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:06:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1091 transitions. [2023-11-26 12:06:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-26 12:06:45,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:45,242 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:45,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 12:06:45,242 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [duErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, duErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-26 12:06:45,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1186570359, now seen corresponding path program 1 times [2023-11-26 12:06:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:45,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540643516] [2023-11-26 12:06:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:45,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 12:06:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 12:06:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 12:06:45,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540643516] [2023-11-26 12:06:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540643516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:45,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968197637] [2023-11-26 12:06:45,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:45,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:45,509 INFO L87 Difference]: Start difference. First operand 787 states and 1091 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)