./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/od-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/od-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:02:08,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:02:08,869 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 15:02:08,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:02:08,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:02:08,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:02:08,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:02:08,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:02:08,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:02:08,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:02:08,903 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:02:08,903 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:02:08,904 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:02:08,904 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:02:08,905 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:02:08,905 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:02:08,906 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:02:08,906 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:02:08,907 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:02:08,907 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:02:08,908 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:02:08,908 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:02:08,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:02:08,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:02:08,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:02:08,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:02:08,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:02:08,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:02:08,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:02:08,912 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:02:08,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:02:08,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:02:08,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:02:08,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:02:08,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:02:08,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:02:08,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:02:08,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:02:08,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:02:08,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:02:08,915 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:02:08,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:02:08,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:02:08,916 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:02:08,916 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:02:08,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:02:08,916 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a603c4e0191ce80b259b362c82fa9e96be30ab5d046ca0e524dbb588b300cc8d [2023-12-02 15:02:09,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:02:09,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:02:09,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:02:09,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:02:09,167 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:02:09,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-12-02 15:02:11,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:02:12,266 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:02:12,267 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/sv-benchmarks/c/busybox-1.22.0/od-2.i [2023-12-02 15:02:12,301 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/data/f196fba2d/0b00a35e34e44443bfb7bf561a01d96e/FLAG3a7643a7c [2023-12-02 15:02:12,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/data/f196fba2d/0b00a35e34e44443bfb7bf561a01d96e [2023-12-02 15:02:12,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:02:12,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:02:12,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:02:12,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:02:12,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:02:12,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:02:12" (1/1) ... [2023-12-02 15:02:12,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ad529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:12, skipping insertion in model container [2023-12-02 15:02:12,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:02:12" (1/1) ... [2023-12-02 15:02:12,421 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:02:14,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:02:14,347 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:02:14,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:02:14,794 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,794 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,795 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,796 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,796 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,796 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,796 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,796 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:02:14,804 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:02:14,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14 WrapperNode [2023-12-02 15:02:14,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:02:14,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:02:14,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:02:14,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:02:14,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:14,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,027 INFO L138 Inliner]: procedures = 692, calls = 1684, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4688 [2023-12-02 15:02:15,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:02:15,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:02:15,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:02:15,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:02:15,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:02:15,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:02:15,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:02:15,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:02:15,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (1/1) ... [2023-12-02 15:02:15,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:02:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:02:15,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:02:15,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:02:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 15:02:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-12-02 15:02:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-12-02 15:02:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-12-02 15:02:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-12-02 15:02:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-12-02 15:02:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-12-02 15:02:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-12-02 15:02:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:02:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-12-02 15:02:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-12-02 15:02:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 15:02:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:02:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-12-02 15:02:15,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-12-02 15:02:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-12-02 15:02:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-12-02 15:02:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-12-02 15:02:15,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-12-02 15:02:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-12-02 15:02:15,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-12-02 15:02:15,337 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:02:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-12-02 15:02:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-12-02 15:02:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:02:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-12-02 15:02:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-12-02 15:02:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:02:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:02:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 15:02:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 15:02:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 15:02:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 15:02:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-12-02 15:02:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-12-02 15:02:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-12-02 15:02:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:02:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:02:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-12-02 15:02:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-12-02 15:02:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-12-02 15:02:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:02:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:02:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-12-02 15:02:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-12-02 15:02:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:02:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:02:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-12-02 15:02:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-12-02 15:02:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-12-02 15:02:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-12-02 15:02:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-12-02 15:02:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-12-02 15:02:15,347 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-12-02 15:02:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-12-02 15:02:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-12-02 15:02:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-12-02 15:02:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-12-02 15:02:15,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-12-02 15:02:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:02:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-12-02 15:02:15,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-12-02 15:02:15,899 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:02:15,902 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:02:21,388 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:02:22,629 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:02:22,629 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-12-02 15:02:22,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:02:22 BoogieIcfgContainer [2023-12-02 15:02:22,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:02:22,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:02:22,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:02:22,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:02:22,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:02:12" (1/3) ... [2023-12-02 15:02:22,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5c8467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:02:22, skipping insertion in model container [2023-12-02 15:02:22,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:02:14" (2/3) ... [2023-12-02 15:02:22,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5c8467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:02:22, skipping insertion in model container [2023-12-02 15:02:22,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:02:22" (3/3) ... [2023-12-02 15:02:22,641 INFO L112 eAbstractionObserver]: Analyzing ICFG od-2.i [2023-12-02 15:02:22,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:02:22,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 155 error locations. [2023-12-02 15:02:22,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:02:22,742 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=FINITE_AUTOMATA, 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;@3bbf48c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:02:22,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 155 error locations. [2023-12-02 15:02:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 1153 states, 806 states have (on average 1.6464019851116625) internal successors, (1327), 1031 states have internal predecessors, (1327), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2023-12-02 15:02:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:02:22,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:22,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:02:22,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:02:22,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 4492648, now seen corresponding path program 1 times [2023-12-02 15:02:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498027271] [2023-12-02 15:02:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:23,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498027271] [2023-12-02 15:02:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498027271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:23,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:02:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:02:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824353038] [2023-12-02 15:02:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:23,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:02:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:02:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:02:23,459 INFO L87 Difference]: Start difference. First operand has 1153 states, 806 states have (on average 1.6464019851116625) internal successors, (1327), 1031 states have internal predecessors, (1327), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) 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) [2023-12-02 15:02:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:02:24,469 INFO L93 Difference]: Finished difference Result 2210 states and 3267 transitions. [2023-12-02 15:02:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:02:24,472 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 [2023-12-02 15:02:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:02:24,512 INFO L225 Difference]: With dead ends: 2210 [2023-12-02 15:02:24,512 INFO L226 Difference]: Without dead ends: 1010 [2023-12-02 15:02:24,527 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 [2023-12-02 15:02:24,531 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 1 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:02:24,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2512 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:02:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-02 15:02:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1010. [2023-12-02 15:02:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 754 states have (on average 1.5026525198938991) internal successors, (1133), 920 states have internal predecessors, (1133), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:02:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1315 transitions. [2023-12-02 15:02:24,633 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1315 transitions. Word has length 3 [2023-12-02 15:02:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:24,634 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1315 transitions. [2023-12-02 15:02:24,634 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) [2023-12-02 15:02:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1315 transitions. [2023-12-02 15:02:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:02:24,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:24,635 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 15:02:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:02:24,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:02:24,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash 698343173, now seen corresponding path program 1 times [2023-12-02 15:02:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412059953] [2023-12-02 15:02:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:25,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412059953] [2023-12-02 15:02:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412059953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:02:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413913389] [2023-12-02 15:02:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:25,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:02:25,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:02:25,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:02:25,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:02:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:25,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:02:25,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:02:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:25,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:02:25,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413913389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:25,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:02:25,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-12-02 15:02:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767565373] [2023-12-02 15:02:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:02:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:02:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:02:25,789 INFO L87 Difference]: Start difference. First operand 1010 states and 1315 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) [2023-12-02 15:02:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:02:26,881 INFO L93 Difference]: Finished difference Result 1010 states and 1315 transitions. [2023-12-02 15:02:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:02:26,882 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 [2023-12-02 15:02:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:02:26,889 INFO L225 Difference]: With dead ends: 1010 [2023-12-02 15:02:26,890 INFO L226 Difference]: Without dead ends: 1009 [2023-12-02 15:02:26,890 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 [2023-12-02 15:02:26,892 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 3 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:02:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2318 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:02:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-02 15:02:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2023-12-02 15:02:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 754 states have (on average 1.5013262599469497) internal successors, (1132), 919 states have internal predecessors, (1132), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:02:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1314 transitions. [2023-12-02 15:02:26,936 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1314 transitions. Word has length 6 [2023-12-02 15:02:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:26,937 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1314 transitions. [2023-12-02 15:02:26,937 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) [2023-12-02 15:02:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1314 transitions. [2023-12-02 15:02:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:02:26,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:26,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 15:02:26,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:02:27,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:02:27,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:02:27,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 173803749, now seen corresponding path program 1 times [2023-12-02 15:02:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58603] [2023-12-02 15:02:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:02:27,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58603] [2023-12-02 15:02:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:27,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:02:27,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:02:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212603438] [2023-12-02 15:02:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:27,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:02:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:02:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:02:27,389 INFO L87 Difference]: Start difference. First operand 1009 states and 1314 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) [2023-12-02 15:02:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:02:28,453 INFO L93 Difference]: Finished difference Result 1009 states and 1314 transitions. [2023-12-02 15:02:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:02:28,453 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 [2023-12-02 15:02:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:02:28,460 INFO L225 Difference]: With dead ends: 1009 [2023-12-02 15:02:28,460 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 15:02:28,461 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 [2023-12-02 15:02:28,462 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 0 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:02:28,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2318 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:02:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 15:02:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1006. [2023-12-02 15:02:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 752 states have (on average 1.5013297872340425) internal successors, (1129), 916 states have internal predecessors, (1129), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:02:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1311 transitions. [2023-12-02 15:02:28,502 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1311 transitions. Word has length 7 [2023-12-02 15:02:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:28,503 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1311 transitions. [2023-12-02 15:02:28,503 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) [2023-12-02 15:02:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1311 transitions. [2023-12-02 15:02:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:02:28,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:28,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:02:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:02:28,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:02:28,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1914855980, now seen corresponding path program 1 times [2023-12-02 15:02:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920480156] [2023-12-02 15:02:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:28,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:28,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920480156] [2023-12-02 15:02:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920480156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:02:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462053751] [2023-12-02 15:02:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:02:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:02:28,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:02:28,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:02:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:29,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:02:29,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:02:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:02:29,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:02:29,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462053751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:29,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:02:29,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:02:29,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678462542] [2023-12-02 15:02:29,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:29,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:02:29,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:02:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:02:29,507 INFO L87 Difference]: Start difference. First operand 1006 states and 1311 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 15:02:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:02:30,444 INFO L93 Difference]: Finished difference Result 1006 states and 1311 transitions. [2023-12-02 15:02:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:02:30,445 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), 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 9 [2023-12-02 15:02:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:02:30,451 INFO L225 Difference]: With dead ends: 1006 [2023-12-02 15:02:30,452 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 15:02:30,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:02:30,453 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 597 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:02:30,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1738 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:02:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 15:02:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-12-02 15:02:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 752 states have (on average 1.4986702127659575) internal successors, (1127), 914 states have internal predecessors, (1127), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:02:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1309 transitions. [2023-12-02 15:02:30,494 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1309 transitions. Word has length 9 [2023-12-02 15:02:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:02:30,495 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1309 transitions. [2023-12-02 15:02:30,496 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), 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) [2023-12-02 15:02:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1309 transitions. [2023-12-02 15:02:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:02:30,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:02:30,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:02:30,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:02:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:02:30,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:02:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:02:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 769008639, now seen corresponding path program 1 times [2023-12-02 15:02:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:02:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650855220] [2023-12-02 15:02:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:02:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:31,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:02:31,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650855220] [2023-12-02 15:02:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650855220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:02:31,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206390412] [2023-12-02 15:02:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:02:31,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:02:31,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:02:31,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:02:31,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:02:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:02:31,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:02:31,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:02:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:31,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:02:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:02:31,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206390412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:02:31,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964783149] [2023-12-02 15:02:31,781 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:02:31,781 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:02:31,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:02:31,790 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:02:31,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:05:30,099 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 282 for LOIs [2023-12-02 15:05:30,220 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:05:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1964783149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:05:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-12-02 15:05:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256006614] [2023-12-02 15:05:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:05:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:05:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:05:38,022 INFO L87 Difference]: Start difference. First operand 1004 states and 1309 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-12-02 15:05:49,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:05:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:53,936 INFO L93 Difference]: Finished difference Result 1006 states and 1310 transitions. [2023-12-02 15:05:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:05:53,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 10 [2023-12-02 15:05:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:53,942 INFO L225 Difference]: With dead ends: 1006 [2023-12-02 15:05:53,942 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 15:05:53,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:05:53,944 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 4 mSDsluCounter, 3664 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4814 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:53,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4814 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2023-12-02 15:05:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 15:05:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-12-02 15:05:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 753 states have (on average 1.49535192563081) internal successors, (1126), 913 states have internal predecessors, (1126), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:05:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1308 transitions. [2023-12-02 15:05:53,979 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1308 transitions. Word has length 10 [2023-12-02 15:05:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:53,980 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1308 transitions. [2023-12-02 15:05:53,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-12-02 15:05:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1308 transitions. [2023-12-02 15:05:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:05:53,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:53,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:53,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:05:54,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:54,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:05:54,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash -546180623, now seen corresponding path program 1 times [2023-12-02 15:05:54,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:05:54,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560264494] [2023-12-02 15:05:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:05:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:05:54,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:05:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560264494] [2023-12-02 15:05:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560264494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:05:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027259775] [2023-12-02 15:05:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:54,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:54,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:54,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:05:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:55,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:05:55,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:05:55,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:55,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027259775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:55,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:05:55,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:05:55,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280252067] [2023-12-02 15:05:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:55,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:05:55,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:55,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:05:55,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:55,173 INFO L87 Difference]: Start difference. First operand 1004 states and 1308 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-02 15:05:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:56,271 INFO L93 Difference]: Finished difference Result 1004 states and 1308 transitions. [2023-12-02 15:05:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:05:56,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 15 [2023-12-02 15:05:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:56,278 INFO L225 Difference]: With dead ends: 1004 [2023-12-02 15:05:56,278 INFO L226 Difference]: Without dead ends: 1003 [2023-12-02 15:05:56,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:56,279 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 7 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:56,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2299 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 15:05:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-12-02 15:05:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2023-12-02 15:05:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 753 states have (on average 1.4940239043824701) internal successors, (1125), 912 states have internal predecessors, (1125), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:05:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1307 transitions. [2023-12-02 15:05:56,326 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1307 transitions. Word has length 15 [2023-12-02 15:05:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:56,327 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1307 transitions. [2023-12-02 15:05:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-02 15:05:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1307 transitions. [2023-12-02 15:05:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:05:56,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:56,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:56,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:05:56,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:56,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:05:56,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash -546269695, now seen corresponding path program 1 times [2023-12-02 15:05:56,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:05:56,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907450080] [2023-12-02 15:05:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:56,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:05:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:05:56,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:05:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907450080] [2023-12-02 15:05:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907450080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:05:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086182274] [2023-12-02 15:05:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:56,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:56,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:05:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:57,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:05:57,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:05:57,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:57,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086182274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:57,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:05:57,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:05:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342732438] [2023-12-02 15:05:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:57,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:05:57,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:05:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:57,524 INFO L87 Difference]: Start difference. First operand 1003 states and 1307 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-02 15:05:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:58,595 INFO L93 Difference]: Finished difference Result 1003 states and 1307 transitions. [2023-12-02 15:05:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:05:58,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 15 [2023-12-02 15:05:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:58,601 INFO L225 Difference]: With dead ends: 1003 [2023-12-02 15:05:58,601 INFO L226 Difference]: Without dead ends: 1002 [2023-12-02 15:05:58,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:58,602 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 2 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:58,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2303 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:05:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-12-02 15:05:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2023-12-02 15:05:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 753 states have (on average 1.4926958831341302) internal successors, (1124), 911 states have internal predecessors, (1124), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:05:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1306 transitions. [2023-12-02 15:05:58,647 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1306 transitions. Word has length 15 [2023-12-02 15:05:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:58,647 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1306 transitions. [2023-12-02 15:05:58,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-12-02 15:05:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1306 transitions. [2023-12-02 15:05:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:05:58,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:58,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:58,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:05:58,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:58,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:05:58,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash 248271780, now seen corresponding path program 1 times [2023-12-02 15:05:58,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:05:58,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276206794] [2023-12-02 15:05:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:58,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:05:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:05:59,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:05:59,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276206794] [2023-12-02 15:05:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276206794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:05:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808700372] [2023-12-02 15:05:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:59,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:59,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:59,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:59,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:05:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:59,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:05:59,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:05:59,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808700372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:59,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:05:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:05:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797985253] [2023-12-02 15:05:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:05:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:05:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:59,772 INFO L87 Difference]: Start difference. First operand 1002 states and 1306 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:00,974 INFO L93 Difference]: Finished difference Result 1010 states and 1316 transitions. [2023-12-02 15:06:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2023-12-02 15:06:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:00,979 INFO L225 Difference]: With dead ends: 1010 [2023-12-02 15:06:00,979 INFO L226 Difference]: Without dead ends: 1009 [2023-12-02 15:06:00,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:00,980 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 4 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:00,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2302 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 15:06:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-12-02 15:06:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1008. [2023-12-02 15:06:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 759 states have (on average 1.4927536231884058) internal successors, (1133), 917 states have internal predecessors, (1133), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:06:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1315 transitions. [2023-12-02 15:06:01,024 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1315 transitions. Word has length 16 [2023-12-02 15:06:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:01,025 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1315 transitions. [2023-12-02 15:06:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1315 transitions. [2023-12-02 15:06:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:06:01,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:01,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:01,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:06:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:01,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:06:01,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 245510539, now seen corresponding path program 1 times [2023-12-02 15:06:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003938824] [2023-12-02 15:06:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:06:01,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:01,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003938824] [2023-12-02 15:06:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003938824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:01,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870808234] [2023-12-02 15:06:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:01,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:01,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:01,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:01,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:06:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:02,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:06:02,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:06:02,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:02,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870808234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:02,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:06:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:06:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091215789] [2023-12-02 15:06:02,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:02,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:02,029 INFO L87 Difference]: Start difference. First operand 1008 states and 1315 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:03,202 INFO L93 Difference]: Finished difference Result 2006 states and 2620 transitions. [2023-12-02 15:06:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:03,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2023-12-02 15:06:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:03,207 INFO L225 Difference]: With dead ends: 2006 [2023-12-02 15:06:03,207 INFO L226 Difference]: Without dead ends: 1014 [2023-12-02 15:06:03,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:03,212 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 0 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:03,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2304 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 15:06:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-12-02 15:06:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1014. [2023-12-02 15:06:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 765 states have (on average 1.488888888888889) internal successors, (1139), 923 states have internal predecessors, (1139), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:06:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1321 transitions. [2023-12-02 15:06:03,256 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1321 transitions. Word has length 16 [2023-12-02 15:06:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:03,256 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 1321 transitions. [2023-12-02 15:06:03,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1321 transitions. [2023-12-02 15:06:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:06:03,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:03,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:03,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:06:03,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:03,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:06:03,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:03,458 INFO L85 PathProgramCache]: Analyzing trace with hash 336186463, now seen corresponding path program 1 times [2023-12-02 15:06:03,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111735589] [2023-12-02 15:06:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:06:03,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111735589] [2023-12-02 15:06:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111735589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:03,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162575044] [2023-12-02 15:06:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:03,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:03,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:03,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:06:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:04,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:06:04,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:06:04,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:04,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162575044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:04,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:06:04,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:06:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812116477] [2023-12-02 15:06:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:04,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:04,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:04,390 INFO L87 Difference]: Start difference. First operand 1014 states and 1321 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:05,591 INFO L93 Difference]: Finished difference Result 1016 states and 1323 transitions. [2023-12-02 15:06:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 16 [2023-12-02 15:06:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:05,596 INFO L225 Difference]: With dead ends: 1016 [2023-12-02 15:06:05,597 INFO L226 Difference]: Without dead ends: 1015 [2023-12-02 15:06:05,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:05,597 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 226 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:05,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2094 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 15:06:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-02 15:06:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1013. [2023-12-02 15:06:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 765 states have (on average 1.4875816993464053) internal successors, (1138), 922 states have internal predecessors, (1138), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:06:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1320 transitions. [2023-12-02 15:06:05,641 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1320 transitions. Word has length 16 [2023-12-02 15:06:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:05,641 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1320 transitions. [2023-12-02 15:06:05,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-02 15:06:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1320 transitions. [2023-12-02 15:06:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 15:06:05,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:05,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:05,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:06:05,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:06:05,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:06:05,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:05,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1831847688, now seen corresponding path program 1 times [2023-12-02 15:06:05,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:05,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905237130] [2023-12-02 15:06:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:05,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:06:06,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:06,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905237130] [2023-12-02 15:06:06,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905237130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:06,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703589866] [2023-12-02 15:06:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:06,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:06,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:06,094 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:06,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:06:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:06,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:06:06,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:06:06,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:06,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703589866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:06,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:06:06,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:06:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413908737] [2023-12-02 15:06:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:06,762 INFO L87 Difference]: Start difference. First operand 1013 states and 1320 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 15:06:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:07,854 INFO L93 Difference]: Finished difference Result 1191 states and 1568 transitions. [2023-12-02 15:06:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2023-12-02 15:06:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:07,859 INFO L225 Difference]: With dead ends: 1191 [2023-12-02 15:06:07,860 INFO L226 Difference]: Without dead ends: 1190 [2023-12-02 15:06:07,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:07,861 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 224 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:07,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 2290 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 15:06:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-12-02 15:06:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1017. [2023-12-02 15:06:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 769 states have (on average 1.4863459037711313) internal successors, (1143), 926 states have internal predecessors, (1143), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:06:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1325 transitions. [2023-12-02 15:06:07,905 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1325 transitions. Word has length 17 [2023-12-02 15:06:07,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:07,905 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1325 transitions. [2023-12-02 15:06:07,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 15:06:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1325 transitions. [2023-12-02 15:06:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:06:07,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:07,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:07,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:06:08,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:06:08,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:06:08,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash -322955906, now seen corresponding path program 1 times [2023-12-02 15:06:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148089841] [2023-12-02 15:06:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:06:08,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148089841] [2023-12-02 15:06:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148089841] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986053419] [2023-12-02 15:06:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:08,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:08,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:08,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:06:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:09,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:06:09,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:06:09,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:06:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986053419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:09,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:06:09,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:06:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055161707] [2023-12-02 15:06:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:09,027 INFO L87 Difference]: Start difference. First operand 1017 states and 1325 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:06:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:10,245 INFO L93 Difference]: Finished difference Result 1017 states and 1325 transitions. [2023-12-02 15:06:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:10,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 15:06:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:10,250 INFO L225 Difference]: With dead ends: 1017 [2023-12-02 15:06:10,250 INFO L226 Difference]: Without dead ends: 1016 [2023-12-02 15:06:10,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:06:10,251 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 0 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:10,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2301 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 15:06:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-02 15:06:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1012. [2023-12-02 15:06:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 765 states have (on average 1.4862745098039216) internal successors, (1137), 921 states have internal predecessors, (1137), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:06:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1319 transitions. [2023-12-02 15:06:10,279 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1319 transitions. Word has length 19 [2023-12-02 15:06:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:10,279 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1319 transitions. [2023-12-02 15:06:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:06:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1319 transitions. [2023-12-02 15:06:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:06:10,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:10,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:10,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:10,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:06:10,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:06:10,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 904498703, now seen corresponding path program 1 times [2023-12-02 15:06:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661821289] [2023-12-02 15:06:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:06:10,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661821289] [2023-12-02 15:06:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661821289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646839247] [2023-12-02 15:06:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:10,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:10,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:10,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:10,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:06:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:11,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:06:11,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:06:11,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:06:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:06:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646839247] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:06:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1231082004] [2023-12-02 15:06:11,503 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-12-02 15:06:11,503 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:06:11,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:06:11,504 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:06:11,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:09:01,516 WARN L293 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 2266 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:09:10,169 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 282 for LOIs [2023-12-02 15:09:10,290 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:09:21,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1231082004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:09:21,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:09:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-12-02 15:09:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82801375] [2023-12-02 15:09:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:09:21,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:09:21,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:09:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-12-02 15:09:21,420 INFO L87 Difference]: Start difference. First operand 1012 states and 1319 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2023-12-02 15:09:34,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:09:36,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:09:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:40,010 INFO L93 Difference]: Finished difference Result 1997 states and 2606 transitions. [2023-12-02 15:09:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:09:40,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 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 21 [2023-12-02 15:09:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:40,016 INFO L225 Difference]: With dead ends: 1997 [2023-12-02 15:09:40,016 INFO L226 Difference]: Without dead ends: 1012 [2023-12-02 15:09:40,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-12-02 15:09:40,019 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 2 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5807 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:40,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5807 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1998 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2023-12-02 15:09:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-12-02 15:09:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2023-12-02 15:09:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 765 states have (on average 1.484967320261438) internal successors, (1136), 921 states have internal predecessors, (1136), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:09:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1318 transitions. [2023-12-02 15:09:40,050 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1318 transitions. Word has length 21 [2023-12-02 15:09:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:40,050 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1318 transitions. [2023-12-02 15:09:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2023-12-02 15:09:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1318 transitions. [2023-12-02 15:09:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:09:40,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:40,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:09:40,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-02 15:09:40,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:09:40,256 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:09:40,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash 959083041, now seen corresponding path program 1 times [2023-12-02 15:09:40,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744710573] [2023-12-02 15:09:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:09:40,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744710573] [2023-12-02 15:09:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744710573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:09:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37755921] [2023-12-02 15:09:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:40,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:40,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:09:40,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:09:40,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:09:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:41,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:09:41,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:09:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:09:41,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:09:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:09:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37755921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:09:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1043740366] [2023-12-02 15:09:41,288 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:09:41,289 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:09:41,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:09:41,289 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:09:41,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:12:29,623 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 2266 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:12:44,865 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 282 for LOIs [2023-12-02 15:12:44,986 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:53,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37059#(<= 2147483647 |ULTIMATE.start_main_~i~8#1|)' at error location [2023-12-02 15:12:53,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:12:53,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:12:53,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-02 15:12:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402040646] [2023-12-02 15:12:53,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:12:53,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:12:53,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:12:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:12:53,525 INFO L87 Difference]: Start difference. First operand 1012 states and 1318 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-12-02 15:12:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:55,275 INFO L93 Difference]: Finished difference Result 2028 states and 2642 transitions. [2023-12-02 15:12:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:12:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 26 [2023-12-02 15:12:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:55,280 INFO L225 Difference]: With dead ends: 2028 [2023-12-02 15:12:55,280 INFO L226 Difference]: Without dead ends: 1021 [2023-12-02 15:12:55,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:12:55,283 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 4 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:55,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4604 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 15:12:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-02 15:12:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1021. [2023-12-02 15:12:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 774 states have (on average 1.479328165374677) internal successors, (1145), 930 states have internal predecessors, (1145), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:12:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1327 transitions. [2023-12-02 15:12:55,314 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1327 transitions. Word has length 26 [2023-12-02 15:12:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:55,314 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1327 transitions. [2023-12-02 15:12:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-12-02 15:12:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1327 transitions. [2023-12-02 15:12:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:12:55,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:55,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:12:55,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:12:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:55,515 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:12:55,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash -202406204, now seen corresponding path program 2 times [2023-12-02 15:12:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009625753] [2023-12-02 15:12:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:55,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009625753] [2023-12-02 15:12:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009625753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627202296] [2023-12-02 15:12:55,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:12:55,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:55,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:55,742 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:55,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:12:56,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:12:56,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:12:56,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:12:56,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:56,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:12:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627202296] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:56,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [863598581] [2023-12-02 15:12:56,409 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:12:56,409 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:56,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:56,409 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:56,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:15:53,192 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 2266 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 15:16:11,970 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 282 for LOIs [2023-12-02 15:16:12,113 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:16:26,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40906#(and (= |~#bb_errno_location~0.base| 67) (= 81 |~#width_bytes~0.base|) (= 78 |~#fp_type_size~0.base|) (= |~#od_longopts~0.offset| 0) (= |~#CSIL_sizeof~0.offset| 0) (= 84 |~#doux~0.base|) (= |~#doxn_address_base_char~0.offset| 0) (= |~#bb_argv_dash~0.offset| 0) (= 0 ~string_min~0) (= ~pseudo_offset~0 0) (= |~#integral_type_size~0.base| 79) (= ~option_mask32~0 0) (= ~xfunc_error_retval~0 1) (= |~#doux~0.offset| 0) (= |~#spec~0.offset| 0) (<= 1 |#StackHeapBarrier|) (= |~#bytes_to_signed_dec_digits~0.base| 75) (= |~#bb_errno_location~0.offset| 0) (= 69 |~#bb_msg_standard_input~0.base|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= 72 |~#bytes_per_block~0.base|) (= ~exit_code~0 0) (= |~#FDL~0.offset| 0) (= ~in_stream~0.offset 0) (= |~#bytes_to_oct_digits~0.offset| 0) (= |~#bytes_to_hex_digits~0.base| 73) (= 85 |~#doux_fmt~0.base|) (= |~#bytes_to_unsigned_dec_digits~0.offset| 0) (= 82 |~#CSIL~0.base|) (= ~prev_pair_equal~0 0) (= 0 ~format_address~0.offset) (= |~#doux_fmt~0.offset| 0) (= 87 |~#doux_fmt_letter~0.base|) (= |~#bkm_suffixes~0.offset| 0) (= |~#fp_type_size~0.offset| 0) (= ~first~0 1) (= 77 |~#die_jmp~0.base|) (= 97 |~#dummy_utmp~0.base|) (= ~msg_eol~0.base 4) (= |~#Bb~0.offset| 0) (= |~#doux_fmt_letter~0.offset| 0) (<= |ULTIMATE.start_main_~argc~1#1| 10000) (= ~bb_errno~0.base 67) (= |~#bb_msg_standard_input~0.offset| 0) (= |~#doux_bytes_to_XXX~0.base| 86) (= 90 |~#FDL_sizeof~0.base|) (<= 1 |ULTIMATE.start_main_~argc~1#1|) (= |~#address_fmt~0.offset| 0) (= |~#doux_fmtstring~0.offset| 0) (= |~#FDL~0.base| 89) (= 76 |~#bytes_to_unsigned_dec_digits~0.base|) (= |~#doxn~0.offset| 0) (= |~#bkm_suffixes~0.base| 71) (= |~#integral_type_size~0.offset| 0) (= |~#bytes_per_block~0.offset| 0) (= 0 |~#bytes_to_signed_dec_digits~0.offset|) (= |~#bb_null_long_options~0.offset| 0) (= ~file_list~0.base 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= 92 |~#doxn~0.base|) (= ~msg_eol~0.offset 0) (= ~in_stream~0.base 0) (= |~#charname~0.base| 96) (= |~#bb_msg_memory_exhausted~0.offset| 0) (= ~applet_name~0.offset 0) (= ~applet_long_options~0.base 0) (= |~#CSIL~0.offset| 0) (= 94 |~#doxn_address_pad_len_char~0.base|) (= ~logmode~0 1) (= |~#bytes_to_oct_digits~0.base| 74) (<= 2147483647 |ULTIMATE.start_main_~i~8#1|) (= 66 |~#bb_argv_dash~0.base|) (= |~#width_bytes~0.offset| 0) (= 70 |~#bb_null_long_options~0.base|) (= |~#FDL_sizeof~0.offset| 0) (= |~#address_fmt~0.base| 65) (= 91 |~#od_longopts~0.base|) (= ~file_list~0.offset 0) (= 95 |~#Bb~0.base|) (= |~#CSIL_sizeof~0.base| 83) (= ~opt_complementary~0.base 0) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (= ~n_specs~0 0) (= ~format_address~0.base 0) (= 88 |~#doux_fmtstring~0.base|) (= 68 |~#bb_msg_memory_exhausted~0.base|) (= |~#die_jmp~0.offset| 0) (= ~applet_long_options~0.offset 0) (= |~#bytes_to_hex_digits~0.offset| 0) (= |~#spec~0.base| 80) (= |~#doxn_address_base_char~0.base| 93) (= ~die_sleep~0 0) (= 0 |~#charname~0.offset|) (= |~#doux_bytes_to_XXX~0.offset| 0) (= |~#doxn_address_pad_len_char~0.offset| 0))' at error location [2023-12-02 15:16:26,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:16:26,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:16:26,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 15:16:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28254402] [2023-12-02 15:16:26,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:16:26,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:16:26,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:16:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:16:26,684 INFO L87 Difference]: Start difference. First operand 1021 states and 1327 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2023-12-02 15:16:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:16:30,000 INFO L93 Difference]: Finished difference Result 2025 states and 2638 transitions. [2023-12-02 15:16:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:16:30,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 35 [2023-12-02 15:16:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:16:30,005 INFO L225 Difference]: With dead ends: 2025 [2023-12-02 15:16:30,005 INFO L226 Difference]: Without dead ends: 1030 [2023-12-02 15:16:30,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:16:30,008 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 582 mSDsluCounter, 5740 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:16:30,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 6882 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 15:16:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-12-02 15:16:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1017. [2023-12-02 15:16:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 771 states have (on average 1.4785992217898833) internal successors, (1140), 926 states have internal predecessors, (1140), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 15:16:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1322 transitions. [2023-12-02 15:16:30,039 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1322 transitions. Word has length 35 [2023-12-02 15:16:30,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:16:30,039 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1322 transitions. [2023-12-02 15:16:30,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2023-12-02 15:16:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1322 transitions. [2023-12-02 15:16:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:16:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:30,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:30,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:16:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:30,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 152 more)] === [2023-12-02 15:16:30,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 305346249, now seen corresponding path program 1 times [2023-12-02 15:16:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:30,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777470385] [2023-12-02 15:16:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 15:16:30,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777470385] [2023-12-02 15:16:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777470385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:16:30,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905953879] [2023-12-02 15:16:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:30,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:30,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:16:30,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c4cc5c5-5384-4efe-ab92-c68e2aa3ed9d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:16:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:31,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:16:31,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:16:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:16:31,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:16:31,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905953879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:16:31,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139065380] [2023-12-02 15:16:31,389 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:16:31,389 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:16:31,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:16:31,389 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:16:31,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs