./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/wc-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/wc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ --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 8284ff34e06e895e53809528da5279897bab7f9d203b904176dcbdf69fe99f4e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:16:13,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:16:13,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:16:13,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:16:13,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:16:14,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:16:14,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:16:14,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:16:14,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:16:14,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:16:14,038 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:16:14,039 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:16:14,039 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:16:14,041 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:16:14,042 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:16:14,042 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:16:14,043 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:16:14,043 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:16:14,045 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:16:14,046 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:16:14,046 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:16:14,047 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:16:14,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:16:14,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:16:14,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:16:14,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:16:14,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:16:14,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:16:14,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:16:14,052 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:16:14,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:16:14,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:16:14,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:16:14,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:16:14,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:16:14,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:14,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:16:14,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:16:14,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:16:14,057 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:16:14,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:16:14,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:16:14,059 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:16:14,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:16:14,060 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_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8284ff34e06e895e53809528da5279897bab7f9d203b904176dcbdf69fe99f4e [2023-11-19 05:16:14,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:16:14,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:16:14,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:16:14,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:16:14,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:16:14,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/wc-1.i [2023-11-19 05:16:17,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:16:17,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:16:17,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/sv-benchmarks/c/busybox-1.22.0/wc-1.i [2023-11-19 05:16:18,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/data/ed9b61add/31888bb33ff847cf9d15987ade3ae7a1/FLAGb349ebd5b [2023-11-19 05:16:18,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/data/ed9b61add/31888bb33ff847cf9d15987ade3ae7a1 [2023-11-19 05:16:18,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:16:18,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:16:18,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:18,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:16:18,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:16:18,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:18" (1/1) ... [2023-11-19 05:16:18,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce569f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:18, skipping insertion in model container [2023-11-19 05:16:18,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:16:18" (1/1) ... [2023-11-19 05:16:18,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:16:19,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:19,869 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:16:20,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:16:20,225 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,225 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,225 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,225 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,226 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,226 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,226 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,226 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:16:20,234 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:16:20,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20 WrapperNode [2023-11-19 05:16:20,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:16:20,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:20,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:16:20,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:16:20,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,442 INFO L138 Inliner]: procedures = 577, calls = 489, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1942 [2023-11-19 05:16:20,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:16:20,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:16:20,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:16:20,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:16:20,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:16:20,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:16:20,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:16:20,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:16:20,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (1/1) ... [2023-11-19 05:16:20,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:16:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:20,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:16:20,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:16:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 05:16:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 05:16:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:16:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:16:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 05:16:20,791 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 05:16:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 05:16:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:16:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:16:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:16:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 05:16:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:16:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:16:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:16:20,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:16:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:16:20,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:16:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 05:16:20,794 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 05:16:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:16:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:16:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 05:16:20,796 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 05:16:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 05:16:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:16:20,797 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:16:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:16:20,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:16:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:16:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:16:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 05:16:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:16:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-19 05:16:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:16:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 05:16:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 05:16:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 05:16:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:16:21,374 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:16:21,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:16:23,311 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:16:24,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:16:24,240 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-11-19 05:16:24,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:24 BoogieIcfgContainer [2023-11-19 05:16:24,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:16:24,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:16:24,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:16:24,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:16:24,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:16:18" (1/3) ... [2023-11-19 05:16:24,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3fc374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:24, skipping insertion in model container [2023-11-19 05:16:24,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:16:20" (2/3) ... [2023-11-19 05:16:24,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3fc374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:16:24, skipping insertion in model container [2023-11-19 05:16:24,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:16:24" (3/3) ... [2023-11-19 05:16:24,273 INFO L112 eAbstractionObserver]: Analyzing ICFG wc-1.i [2023-11-19 05:16:24,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:16:24,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2023-11-19 05:16:24,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:16:24,383 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;@72f5a18c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:16:24,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-11-19 05:16:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 301 states have (on average 1.7209302325581395) internal successors, (518), 375 states have internal predecessors, (518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 05:16:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:16:24,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:24,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:16:24,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:24,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1842260, now seen corresponding path program 1 times [2023-11-19 05:16:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424884293] [2023-11-19 05:16:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:24,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:24,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424884293] [2023-11-19 05:16:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424884293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:24,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:16:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172978072] [2023-11-19 05:16:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:24,999 INFO L87 Difference]: Start difference. First operand has 406 states, 301 states have (on average 1.7209302325581395) internal successors, (518), 375 states have internal predecessors, (518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:25,534 INFO L93 Difference]: Finished difference Result 806 states and 1138 transitions. [2023-11-19 05:16:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:25,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:16:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:25,560 INFO L225 Difference]: With dead ends: 806 [2023-11-19 05:16:25,562 INFO L226 Difference]: Without dead ends: 402 [2023-11-19 05:16:25,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:25,578 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:25,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 906 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:16:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-19 05:16:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2023-11-19 05:16:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 299 states have (on average 1.6321070234113713) internal successors, (488), 376 states have internal predecessors, (488), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 531 transitions. [2023-11-19 05:16:25,673 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 531 transitions. Word has length 3 [2023-11-19 05:16:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:25,674 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 531 transitions. [2023-11-19 05:16:25,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 531 transitions. [2023-11-19 05:16:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:16:25,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:25,676 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 05:16:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:16:25,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:25,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash -951443907, now seen corresponding path program 1 times [2023-11-19 05:16:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595991063] [2023-11-19 05:16:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:25,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:25,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595991063] [2023-11-19 05:16:25,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595991063] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497251368] [2023-11-19 05:16:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:25,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:25,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:25,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:16:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:26,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:26,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:26,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497251368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 05:16:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048143409] [2023-11-19 05:16:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:16:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:16:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:26,321 INFO L87 Difference]: Start difference. First operand 402 states and 531 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:26,665 INFO L93 Difference]: Finished difference Result 402 states and 531 transitions. [2023-11-19 05:16:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:16:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:16:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:26,670 INFO L225 Difference]: With dead ends: 402 [2023-11-19 05:16:26,670 INFO L226 Difference]: Without dead ends: 401 [2023-11-19 05:16:26,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:26,672 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 3 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:26,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 902 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-19 05:16:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2023-11-19 05:16:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 299 states have (on average 1.62876254180602) internal successors, (487), 375 states have internal predecessors, (487), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 530 transitions. [2023-11-19 05:16:26,699 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 530 transitions. Word has length 6 [2023-11-19 05:16:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:26,700 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 530 transitions. [2023-11-19 05:16:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 530 transitions. [2023-11-19 05:16:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:16:26,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:26,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 05:16:26,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:26,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:26,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 570010321, now seen corresponding path program 1 times [2023-11-19 05:16:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304750581] [2023-11-19 05:16:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:27,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304750581] [2023-11-19 05:16:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304750581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:27,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:16:27,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:16:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740926627] [2023-11-19 05:16:27,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:27,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:27,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:27,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:27,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:27,112 INFO L87 Difference]: Start difference. First operand 401 states and 530 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:27,454 INFO L93 Difference]: Finished difference Result 401 states and 530 transitions. [2023-11-19 05:16:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:16:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:27,458 INFO L225 Difference]: With dead ends: 401 [2023-11-19 05:16:27,458 INFO L226 Difference]: Without dead ends: 400 [2023-11-19 05:16:27,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:16:27,460 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 902 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-19 05:16:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2023-11-19 05:16:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 297 states have (on average 1.6296296296296295) internal successors, (484), 372 states have internal predecessors, (484), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 527 transitions. [2023-11-19 05:16:27,476 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 527 transitions. Word has length 7 [2023-11-19 05:16:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:27,476 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 527 transitions. [2023-11-19 05:16:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:16:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 527 transitions. [2023-11-19 05:16:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:16:27,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:27,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:16:27,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:27,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -439563151, now seen corresponding path program 1 times [2023-11-19 05:16:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:27,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966115881] [2023-11-19 05:16:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:27,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:27,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966115881] [2023-11-19 05:16:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966115881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764247810] [2023-11-19 05:16:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:27,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:27,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:27,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:27,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:16:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:28,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:28,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:28,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:28,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764247810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111168452] [2023-11-19 05:16:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:28,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:28,042 INFO L87 Difference]: Start difference. First operand 398 states and 527 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) [2023-11-19 05:16:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:28,322 INFO L93 Difference]: Finished difference Result 398 states and 527 transitions. [2023-11-19 05:16:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:28,323 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 [2023-11-19 05:16:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:28,326 INFO L225 Difference]: With dead ends: 398 [2023-11-19 05:16:28,326 INFO L226 Difference]: Without dead ends: 396 [2023-11-19 05:16:28,327 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 [2023-11-19 05:16:28,328 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 352 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:28,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 583 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-19 05:16:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2023-11-19 05:16:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 297 states have (on average 1.6228956228956228) internal successors, (482), 370 states have internal predecessors, (482), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 525 transitions. [2023-11-19 05:16:28,346 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 525 transitions. Word has length 9 [2023-11-19 05:16:28,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:28,348 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 525 transitions. [2023-11-19 05:16:28,348 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) [2023-11-19 05:16:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 525 transitions. [2023-11-19 05:16:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:16:28,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:28,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:28,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:28,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:28,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -741555418, now seen corresponding path program 1 times [2023-11-19 05:16:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:28,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175594187] [2023-11-19 05:16:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:28,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:28,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:28,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175594187] [2023-11-19 05:16:28,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175594187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:28,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341441786] [2023-11-19 05:16:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:28,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:28,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:16:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:29,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:29,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:29,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341441786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183835297] [2023-11-19 05:16:29,199 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 05:16:29,199 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:29,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:29,209 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:29,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:40,897 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-11-19 05:16:40,991 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:16:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [183835297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:42,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:16:42,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-19 05:16:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282679970] [2023-11-19 05:16:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:16:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:16:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:16:42,682 INFO L87 Difference]: Start difference. First operand 396 states and 525 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2023-11-19 05:16:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:46,296 INFO L93 Difference]: Finished difference Result 398 states and 526 transitions. [2023-11-19 05:16:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:16:46,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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 [2023-11-19 05:16:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:46,304 INFO L225 Difference]: With dead ends: 398 [2023-11-19 05:16:46,304 INFO L226 Difference]: Without dead ends: 396 [2023-11-19 05:16:46,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:16:46,306 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 6 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:46,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1848 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 05:16:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-19 05:16:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2023-11-19 05:16:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 298 states have (on average 1.6140939597315436) internal successors, (481), 369 states have internal predecessors, (481), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 524 transitions. [2023-11-19 05:16:46,328 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 524 transitions. Word has length 10 [2023-11-19 05:16:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:46,328 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 524 transitions. [2023-11-19 05:16:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2023-11-19 05:16:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 524 transitions. [2023-11-19 05:16:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:16:46,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:46,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:46,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 05:16:46,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:46,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:46,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1023355697, now seen corresponding path program 1 times [2023-11-19 05:16:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:46,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601616480] [2023-11-19 05:16:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:46,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601616480] [2023-11-19 05:16:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601616480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580982649] [2023-11-19 05:16:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:46,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:46,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:16:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:47,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:47,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:47,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580982649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304327084] [2023-11-19 05:16:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:47,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:47,151 INFO L87 Difference]: Start difference. First operand 396 states and 524 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) [2023-11-19 05:16:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:47,496 INFO L93 Difference]: Finished difference Result 396 states and 524 transitions. [2023-11-19 05:16:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:47,497 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 [2023-11-19 05:16:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:47,500 INFO L225 Difference]: With dead ends: 396 [2023-11-19 05:16:47,501 INFO L226 Difference]: Without dead ends: 395 [2023-11-19 05:16:47,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:47,502 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 7 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:47,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 883 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-19 05:16:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2023-11-19 05:16:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 298 states have (on average 1.610738255033557) internal successors, (480), 368 states have internal predecessors, (480), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 523 transitions. [2023-11-19 05:16:47,524 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 523 transitions. Word has length 15 [2023-11-19 05:16:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:47,524 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 523 transitions. [2023-11-19 05:16:47,525 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) [2023-11-19 05:16:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 523 transitions. [2023-11-19 05:16:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:16:47,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:47,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:47,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:47,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:16:47,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1023408034, now seen corresponding path program 1 times [2023-11-19 05:16:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860073435] [2023-11-19 05:16:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:47,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860073435] [2023-11-19 05:16:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860073435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957123439] [2023-11-19 05:16:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:47,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:47,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:47,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:16:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:48,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:48,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:48,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957123439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:48,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:48,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466247332] [2023-11-19 05:16:48,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:48,306 INFO L87 Difference]: Start difference. First operand 395 states and 523 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) [2023-11-19 05:16:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:48,613 INFO L93 Difference]: Finished difference Result 395 states and 523 transitions. [2023-11-19 05:16:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:48,614 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 [2023-11-19 05:16:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:48,617 INFO L225 Difference]: With dead ends: 395 [2023-11-19 05:16:48,617 INFO L226 Difference]: Without dead ends: 394 [2023-11-19 05:16:48,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:48,619 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 2 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:48,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-19 05:16:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2023-11-19 05:16:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 298 states have (on average 1.6073825503355705) internal successors, (479), 367 states have internal predecessors, (479), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 522 transitions. [2023-11-19 05:16:48,641 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 522 transitions. Word has length 15 [2023-11-19 05:16:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:48,641 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 522 transitions. [2023-11-19 05:16:48,642 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) [2023-11-19 05:16:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 522 transitions. [2023-11-19 05:16:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:16:48,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:48,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:48,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:48,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:48,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:48,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1659255126, now seen corresponding path program 1 times [2023-11-19 05:16:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304928501] [2023-11-19 05:16:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:49,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304928501] [2023-11-19 05:16:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304928501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575604943] [2023-11-19 05:16:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:49,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:49,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:16:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:49,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:49,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:49,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575604943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372465996] [2023-11-19 05:16:49,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:49,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:49,411 INFO L87 Difference]: Start difference. First operand 394 states and 522 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) [2023-11-19 05:16:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:49,730 INFO L93 Difference]: Finished difference Result 402 states and 532 transitions. [2023-11-19 05:16:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:49,731 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 [2023-11-19 05:16:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:49,734 INFO L225 Difference]: With dead ends: 402 [2023-11-19 05:16:49,734 INFO L226 Difference]: Without dead ends: 401 [2023-11-19 05:16:49,735 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 [2023-11-19 05:16:49,735 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 4 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:49,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 886 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-19 05:16:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 400. [2023-11-19 05:16:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 304 states have (on average 1.605263157894737) internal successors, (488), 373 states have internal predecessors, (488), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 531 transitions. [2023-11-19 05:16:49,758 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 531 transitions. Word has length 16 [2023-11-19 05:16:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:49,759 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 531 transitions. [2023-11-19 05:16:49,759 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) [2023-11-19 05:16:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 531 transitions. [2023-11-19 05:16:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:16:49,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:49,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:49,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:49,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:49,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:49,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1660877582, now seen corresponding path program 1 times [2023-11-19 05:16:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:49,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712820175] [2023-11-19 05:16:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:49,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:50,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712820175] [2023-11-19 05:16:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712820175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204052042] [2023-11-19 05:16:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:50,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:50,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:50,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:16:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:50,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:50,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:50,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204052042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897455570] [2023-11-19 05:16:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:50,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:50,511 INFO L87 Difference]: Start difference. First operand 400 states and 531 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) [2023-11-19 05:16:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:50,862 INFO L93 Difference]: Finished difference Result 790 states and 1052 transitions. [2023-11-19 05:16:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:50,863 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 [2023-11-19 05:16:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:50,866 INFO L225 Difference]: With dead ends: 790 [2023-11-19 05:16:50,866 INFO L226 Difference]: Without dead ends: 406 [2023-11-19 05:16:50,867 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 [2023-11-19 05:16:50,868 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 0 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:50,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 888 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-19 05:16:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2023-11-19 05:16:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 310 states have (on average 1.5935483870967742) internal successors, (494), 379 states have internal predecessors, (494), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 537 transitions. [2023-11-19 05:16:50,888 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 537 transitions. Word has length 16 [2023-11-19 05:16:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:50,888 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 537 transitions. [2023-11-19 05:16:50,888 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) [2023-11-19 05:16:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 537 transitions. [2023-11-19 05:16:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:16:50,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:50,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:50,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:16:51,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:51,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1609137504, now seen corresponding path program 1 times [2023-11-19 05:16:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734726609] [2023-11-19 05:16:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:51,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734726609] [2023-11-19 05:16:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734726609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529358769] [2023-11-19 05:16:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:51,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:51,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:51,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:51,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:16:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:51,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:51,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:51,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529358769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765757477] [2023-11-19 05:16:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:51,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:51,785 INFO L87 Difference]: Start difference. First operand 406 states and 537 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) [2023-11-19 05:16:52,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:52,066 INFO L93 Difference]: Finished difference Result 408 states and 539 transitions. [2023-11-19 05:16:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:52,067 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 [2023-11-19 05:16:52,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:52,070 INFO L225 Difference]: With dead ends: 408 [2023-11-19 05:16:52,070 INFO L226 Difference]: Without dead ends: 407 [2023-11-19 05:16:52,070 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 [2023-11-19 05:16:52,071 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 258 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:52,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 651 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-19 05:16:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2023-11-19 05:16:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 310 states have (on average 1.5903225806451613) internal successors, (493), 378 states have internal predecessors, (493), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 536 transitions. [2023-11-19 05:16:52,093 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 536 transitions. Word has length 16 [2023-11-19 05:16:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 536 transitions. [2023-11-19 05:16:52,094 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) [2023-11-19 05:16:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 536 transitions. [2023-11-19 05:16:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:16:52,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:52,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:52,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:16:52,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:52,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1656345416, now seen corresponding path program 1 times [2023-11-19 05:16:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563198122] [2023-11-19 05:16:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:52,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:52,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563198122] [2023-11-19 05:16:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563198122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730829149] [2023-11-19 05:16:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:52,486 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:52,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:16:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:52,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:52,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:16:52,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730829149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:52,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:52,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58721107] [2023-11-19 05:16:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:52,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:52,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:52,944 INFO L87 Difference]: Start difference. First operand 405 states and 536 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) [2023-11-19 05:16:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:53,330 INFO L93 Difference]: Finished difference Result 605 states and 816 transitions. [2023-11-19 05:16:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:53,331 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 [2023-11-19 05:16:53,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:53,335 INFO L225 Difference]: With dead ends: 605 [2023-11-19 05:16:53,335 INFO L226 Difference]: Without dead ends: 604 [2023-11-19 05:16:53,336 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 [2023-11-19 05:16:53,336 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 256 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:53,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 875 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-19 05:16:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 409. [2023-11-19 05:16:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 314 states have (on average 1.585987261146497) internal successors, (498), 382 states have internal predecessors, (498), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 541 transitions. [2023-11-19 05:16:53,361 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 541 transitions. Word has length 17 [2023-11-19 05:16:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:53,361 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 541 transitions. [2023-11-19 05:16:53,361 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) [2023-11-19 05:16:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 541 transitions. [2023-11-19 05:16:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:16:53,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:53,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:53,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:53,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:16:53,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:53,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1180403109, now seen corresponding path program 1 times [2023-11-19 05:16:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:53,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799688720] [2023-11-19 05:16:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:16:53,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799688720] [2023-11-19 05:16:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799688720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278090512] [2023-11-19 05:16:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:53,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:53,732 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:53,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:16:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:54,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:16:54,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:16:54,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:16:54,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278090512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:16:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:16:54,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 05:16:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28294387] [2023-11-19 05:16:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:16:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:16:54,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:16:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:16:54,156 INFO L87 Difference]: Start difference. First operand 409 states and 541 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:16:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:54,452 INFO L93 Difference]: Finished difference Result 409 states and 541 transitions. [2023-11-19 05:16:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:16:54,453 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 [2023-11-19 05:16:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:54,455 INFO L225 Difference]: With dead ends: 409 [2023-11-19 05:16:54,455 INFO L226 Difference]: Without dead ends: 408 [2023-11-19 05:16:54,456 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 [2023-11-19 05:16:54,457 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:54,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 885 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:16:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-19 05:16:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2023-11-19 05:16:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 310 states have (on average 1.5870967741935484) internal successors, (492), 377 states have internal predecessors, (492), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:16:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 535 transitions. [2023-11-19 05:16:54,478 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 535 transitions. Word has length 19 [2023-11-19 05:16:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:54,479 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 535 transitions. [2023-11-19 05:16:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:16:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 535 transitions. [2023-11-19 05:16:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:16:54,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:54,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:16:54,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:54,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 70 more)] === [2023-11-19 05:16:54,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 7309967, now seen corresponding path program 1 times [2023-11-19 05:16:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014073606] [2023-11-19 05:16:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:54,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:16:54,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014073606] [2023-11-19 05:16:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014073606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:16:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978615721] [2023-11-19 05:16:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:54,889 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:54,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a648158-02c4-4a33-9a44-d907536c01b1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:16:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:55,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:16:55,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:16:55,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:16:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978615721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489718211] [2023-11-19 05:16:55,397 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 05:16:55,397 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:55,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:55,397 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:55,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:17:05,701 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-11-19 05:17:05,739 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:17:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [489718211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:17:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-11-19 05:17:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042539720] [2023-11-19 05:17:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:17:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:17:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-11-19 05:17:08,452 INFO L87 Difference]: Start difference. First operand 404 states and 535 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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)