./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/tac-2.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_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/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_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/tac-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/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_5a6dcd19-db33-4702-a168-c605617c5c20/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 e2335f4c07c0129d2e69ffd9d14c59795c6fab06c496c22eabe1dbb307857c96 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:17,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:17,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:51:17,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:17,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:17,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:17,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:17,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:17,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:17,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:17,799 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:17,800 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:17,801 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:17,803 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:17,804 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:17,804 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:17,805 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:17,805 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:17,806 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:17,806 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:17,807 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:17,807 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:17,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:17,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:17,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:17,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:17,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:17,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:17,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:17,811 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:51:17,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:17,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:17,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:17,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:17,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:17,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:17,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:17,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:17,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:51:17,815 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:17,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:17,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:51:17,816 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:17,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:17,817 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_5a6dcd19-db33-4702-a168-c605617c5c20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2335f4c07c0129d2e69ffd9d14c59795c6fab06c496c22eabe1dbb307857c96 [2023-11-19 04:51:18,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:18,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:18,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:18,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:18,191 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:18,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/tac-2.i [2023-11-19 04:51:21,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:21,800 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:21,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/sv-benchmarks/c/busybox-1.22.0/tac-2.i [2023-11-19 04:51:21,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/data/ea1812fab/0d28126b8767465695edf3f0cc305c12/FLAG1255fea69 [2023-11-19 04:51:21,861 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/data/ea1812fab/0d28126b8767465695edf3f0cc305c12 [2023-11-19 04:51:21,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:21,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:21,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:21,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:21,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:21,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:21" (1/1) ... [2023-11-19 04:51:21,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6b9009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:21, skipping insertion in model container [2023-11-19 04:51:21,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:21" (1/1) ... [2023-11-19 04:51:22,017 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:23,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:23,477 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:23,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:23,733 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:23,734 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:23,734 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:23,739 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:23,740 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:23,748 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:23,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23 WrapperNode [2023-11-19 04:51:23,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:23,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:23,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:23,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:23,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:23,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:23,978 INFO L138 Inliner]: procedures = 575, calls = 409, calls flagged for inlining = 26, calls inlined = 25, statements flattened = 1712 [2023-11-19 04:51:23,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:23,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:23,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:23,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:23,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:23,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:24,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:24,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:24,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:24,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (1/1) ... [2023-11-19 04:51:24,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:24,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:24,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 04:51:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 04:51:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 04:51:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 04:51:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:51:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:51:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:51:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:51:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:51:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:51:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:51:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:51:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:51:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:51:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:51:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 04:51:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 04:51:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 04:51:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:51:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:51:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:51:24,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:51:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:51:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:51:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:51:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure full_write [2023-11-19 04:51:24,284 INFO L138 BoogieDeclarations]: Found implementation of procedure full_write [2023-11-19 04:51:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:51:24,285 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:51:24,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:51:24,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:51:24,835 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:24,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:26,474 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:27,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:27,050 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-19 04:51:27,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:27 BoogieIcfgContainer [2023-11-19 04:51:27,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:27,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:27,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:27,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:27,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:21" (1/3) ... [2023-11-19 04:51:27,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e596957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:27, skipping insertion in model container [2023-11-19 04:51:27,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:23" (2/3) ... [2023-11-19 04:51:27,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e596957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:27, skipping insertion in model container [2023-11-19 04:51:27,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:27" (3/3) ... [2023-11-19 04:51:27,077 INFO L112 eAbstractionObserver]: Analyzing ICFG tac-2.i [2023-11-19 04:51:27,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:27,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2023-11-19 04:51:27,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:27,174 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;@606563d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:27,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-11-19 04:51:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 428 states, 314 states have (on average 1.694267515923567) internal successors, (532), 387 states have internal predecessors, (532), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 04:51:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:51:27,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:27,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:51:27,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:27,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1702562, now seen corresponding path program 1 times [2023-11-19 04:51:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:27,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143608998] [2023-11-19 04:51:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:27,680 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 04:51:27,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:27,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143608998] [2023-11-19 04:51:27,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143608998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:27,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:27,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:51:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348276221] [2023-11-19 04:51:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:27,718 INFO L87 Difference]: Start difference. First operand has 428 states, 314 states have (on average 1.694267515923567) internal successors, (532), 387 states have internal predecessors, (532), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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 04:51:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:28,134 INFO L93 Difference]: Finished difference Result 848 states and 1197 transitions. [2023-11-19 04:51:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:28,137 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 04:51:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:28,156 INFO L225 Difference]: With dead ends: 848 [2023-11-19 04:51:28,156 INFO L226 Difference]: Without dead ends: 422 [2023-11-19 04:51:28,168 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 04:51:28,171 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:28,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 960 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-19 04:51:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2023-11-19 04:51:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 310 states have (on average 1.6161290322580646) internal successors, (501), 388 states have internal predecessors, (501), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 556 transitions. [2023-11-19 04:51:28,312 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 556 transitions. Word has length 3 [2023-11-19 04:51:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:28,313 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 556 transitions. [2023-11-19 04:51:28,313 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 04:51:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 556 transitions. [2023-11-19 04:51:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:51:28,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:28,314 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:51:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:51:28,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:28,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -818200862, now seen corresponding path program 1 times [2023-11-19 04:51:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870006411] [2023-11-19 04:51:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:28,473 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 04:51:28,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:28,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870006411] [2023-11-19 04:51:28,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870006411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:28,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86906045] [2023-11-19 04:51:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:28,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:28,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:28,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:28,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:51:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:28,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:28,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:28,851 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 04:51:28,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86906045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:28,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:28,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:51:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795505978] [2023-11-19 04:51:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:28,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:28,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:28,863 INFO L87 Difference]: Start difference. First operand 422 states and 556 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 04:51:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:29,136 INFO L93 Difference]: Finished difference Result 422 states and 556 transitions. [2023-11-19 04:51:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:29,138 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 04:51:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:29,141 INFO L225 Difference]: With dead ends: 422 [2023-11-19 04:51:29,141 INFO L226 Difference]: Without dead ends: 421 [2023-11-19 04:51:29,142 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 04:51:29,143 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 956 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-19 04:51:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2023-11-19 04:51:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 310 states have (on average 1.6129032258064515) internal successors, (500), 387 states have internal predecessors, (500), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 555 transitions. [2023-11-19 04:51:29,169 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 555 transitions. Word has length 6 [2023-11-19 04:51:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:29,170 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 555 transitions. [2023-11-19 04:51:29,170 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 04:51:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 555 transitions. [2023-11-19 04:51:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:51:29,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:29,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:51:29,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:29,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:29,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash 405577439, now seen corresponding path program 1 times [2023-11-19 04:51:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:29,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108658903] [2023-11-19 04:51:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:29,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:29,563 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 04:51:29,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108658903] [2023-11-19 04:51:29,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108658903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:29,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:29,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614734717] [2023-11-19 04:51:29,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:29,573 INFO L87 Difference]: Start difference. First operand 421 states and 555 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 04:51:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:29,811 INFO L93 Difference]: Finished difference Result 421 states and 555 transitions. [2023-11-19 04:51:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:29,812 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 04:51:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:29,816 INFO L225 Difference]: With dead ends: 421 [2023-11-19 04:51:29,816 INFO L226 Difference]: Without dead ends: 420 [2023-11-19 04:51:29,816 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 04:51:29,817 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:29,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 956 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:29,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-19 04:51:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2023-11-19 04:51:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 308 states have (on average 1.6136363636363635) internal successors, (497), 384 states have internal predecessors, (497), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 552 transitions. [2023-11-19 04:51:29,839 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 552 transitions. Word has length 7 [2023-11-19 04:51:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:29,840 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 552 transitions. [2023-11-19 04:51:29,840 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 04:51:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 552 transitions. [2023-11-19 04:51:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:51:29,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:29,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:51:29,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:29,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 270691718, now seen corresponding path program 1 times [2023-11-19 04:51:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:29,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86956850] [2023-11-19 04:51:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:30,041 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 04:51:30,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86956850] [2023-11-19 04:51:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86956850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445439312] [2023-11-19 04:51:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:30,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:30,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:30,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:30,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:51:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:30,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:30,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:30,335 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 04:51:30,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445439312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866468314] [2023-11-19 04:51:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:30,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:30,338 INFO L87 Difference]: Start difference. First operand 418 states and 552 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 04:51:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:30,611 INFO L93 Difference]: Finished difference Result 418 states and 552 transitions. [2023-11-19 04:51:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:30,612 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 04:51:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:30,615 INFO L225 Difference]: With dead ends: 418 [2023-11-19 04:51:30,615 INFO L226 Difference]: Without dead ends: 416 [2023-11-19 04:51:30,615 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 04:51:30,616 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 354 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:30,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 630 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-19 04:51:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2023-11-19 04:51:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 308 states have (on average 1.6071428571428572) internal successors, (495), 382 states have internal predecessors, (495), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 550 transitions. [2023-11-19 04:51:30,636 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 550 transitions. Word has length 9 [2023-11-19 04:51:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:30,638 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 550 transitions. [2023-11-19 04:51:30,638 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 04:51:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 550 transitions. [2023-11-19 04:51:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:51:30,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:30,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:30,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:30,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:30,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:30,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash -198490940, now seen corresponding path program 1 times [2023-11-19 04:51:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671327261] [2023-11-19 04:51:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:30,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:31,005 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 04:51:31,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671327261] [2023-11-19 04:51:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671327261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058244242] [2023-11-19 04:51:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:31,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:31,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:51:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:31,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:31,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:31,309 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 04:51:31,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:31,337 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 04:51:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058244242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774359858] [2023-11-19 04:51:31,357 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:51:31,357 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:31,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:31,366 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:31,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:51:37,904 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-19 04:51:37,951 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:51:39,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [774359858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:39,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:51:39,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-19 04:51:39,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813039285] [2023-11-19 04:51:39,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:39,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:51:39,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:39,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:51:39,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:51:39,626 INFO L87 Difference]: Start difference. First operand 416 states and 550 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 04:51:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:42,750 INFO L93 Difference]: Finished difference Result 418 states and 551 transitions. [2023-11-19 04:51:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:51:42,751 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 04:51:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:42,754 INFO L225 Difference]: With dead ends: 418 [2023-11-19 04:51:42,754 INFO L226 Difference]: Without dead ends: 416 [2023-11-19 04:51:42,755 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 04:51:42,756 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 5 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:42,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1970 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 04:51:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-19 04:51:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2023-11-19 04:51:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 309 states have (on average 1.598705501618123) internal successors, (494), 381 states have internal predecessors, (494), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 549 transitions. [2023-11-19 04:51:42,778 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 549 transitions. Word has length 10 [2023-11-19 04:51:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:42,779 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 549 transitions. [2023-11-19 04:51:42,779 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 04:51:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 549 transitions. [2023-11-19 04:51:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:51:42,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:42,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:42,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:42,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:42,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1564247251, now seen corresponding path program 1 times [2023-11-19 04:51:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:42,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922861501] [2023-11-19 04:51:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:43,152 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 04:51:43,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922861501] [2023-11-19 04:51:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922861501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621407693] [2023-11-19 04:51:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:43,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:43,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:51:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:43,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:43,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:43,446 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 04:51:43,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621407693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:43,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:43,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152070841] [2023-11-19 04:51:43,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:43,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:43,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:43,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:43,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:43,449 INFO L87 Difference]: Start difference. First operand 416 states and 549 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 04:51:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:43,707 INFO L93 Difference]: Finished difference Result 416 states and 549 transitions. [2023-11-19 04:51:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:43,708 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 04:51:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:43,711 INFO L225 Difference]: With dead ends: 416 [2023-11-19 04:51:43,711 INFO L226 Difference]: Without dead ends: 415 [2023-11-19 04:51:43,711 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 04:51:43,712 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 2 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:43,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 943 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-19 04:51:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2023-11-19 04:51:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.5954692556634305) internal successors, (493), 380 states have internal predecessors, (493), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 548 transitions. [2023-11-19 04:51:43,734 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 548 transitions. Word has length 15 [2023-11-19 04:51:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:43,734 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 548 transitions. [2023-11-19 04:51:43,735 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 04:51:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 548 transitions. [2023-11-19 04:51:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:51:43,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:43,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:43,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:43,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:43,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:43,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1564292706, now seen corresponding path program 1 times [2023-11-19 04:51:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12634199] [2023-11-19 04:51:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:44,125 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 04:51:44,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12634199] [2023-11-19 04:51:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12634199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262477026] [2023-11-19 04:51:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:44,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:44,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:51:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:44,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:44,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:44,437 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 04:51:44,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262477026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668123531] [2023-11-19 04:51:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:44,440 INFO L87 Difference]: Start difference. First operand 415 states and 548 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 04:51:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:44,675 INFO L93 Difference]: Finished difference Result 415 states and 548 transitions. [2023-11-19 04:51:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:44,676 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 04:51:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:44,679 INFO L225 Difference]: With dead ends: 415 [2023-11-19 04:51:44,679 INFO L226 Difference]: Without dead ends: 414 [2023-11-19 04:51:44,680 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 04:51:44,680 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 6 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:44,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 936 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-11-19 04:51:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2023-11-19 04:51:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 309 states have (on average 1.5922330097087378) internal successors, (492), 379 states have internal predecessors, (492), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 547 transitions. [2023-11-19 04:51:44,701 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 547 transitions. Word has length 15 [2023-11-19 04:51:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:44,702 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 547 transitions. [2023-11-19 04:51:44,702 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 04:51:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 547 transitions. [2023-11-19 04:51:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:51:44,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:44,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:44,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:44,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1292656876, now seen corresponding path program 1 times [2023-11-19 04:51:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359905740] [2023-11-19 04:51:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:45,104 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 04:51:45,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359905740] [2023-11-19 04:51:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359905740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753575802] [2023-11-19 04:51:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:45,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:45,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:45,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:51:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:45,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:45,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:45,506 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 04:51:45,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:45,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753575802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:45,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:45,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:45,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096386592] [2023-11-19 04:51:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:45,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:45,508 INFO L87 Difference]: Start difference. First operand 414 states and 547 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 04:51:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:45,732 INFO L93 Difference]: Finished difference Result 416 states and 549 transitions. [2023-11-19 04:51:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:45,733 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 04:51:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:45,736 INFO L225 Difference]: With dead ends: 416 [2023-11-19 04:51:45,736 INFO L226 Difference]: Without dead ends: 415 [2023-11-19 04:51:45,737 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 04:51:45,738 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 258 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:45,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 705 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-19 04:51:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2023-11-19 04:51:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 309 states have (on average 1.5889967637540454) internal successors, (491), 378 states have internal predecessors, (491), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 546 transitions. [2023-11-19 04:51:45,760 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 546 transitions. Word has length 16 [2023-11-19 04:51:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 546 transitions. [2023-11-19 04:51:45,761 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 04:51:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 546 transitions. [2023-11-19 04:51:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:51:45,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:45,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:45,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 04:51:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:45,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:45,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1247024944, now seen corresponding path program 1 times [2023-11-19 04:51:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599310896] [2023-11-19 04:51:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:46,124 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 04:51:46,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599310896] [2023-11-19 04:51:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599310896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067319921] [2023-11-19 04:51:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:46,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:46,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:51:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:46,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:46,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:46,481 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 04:51:46,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067319921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:46,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490328185] [2023-11-19 04:51:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:46,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:46,484 INFO L87 Difference]: Start difference. First operand 413 states and 546 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 04:51:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:46,741 INFO L93 Difference]: Finished difference Result 817 states and 1084 transitions. [2023-11-19 04:51:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:46,742 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 04:51:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:46,745 INFO L225 Difference]: With dead ends: 817 [2023-11-19 04:51:46,745 INFO L226 Difference]: Without dead ends: 416 [2023-11-19 04:51:46,746 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 04:51:46,747 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:46,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 940 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-19 04:51:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2023-11-19 04:51:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 312 states have (on average 1.5833333333333333) internal successors, (494), 381 states have internal predecessors, (494), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 549 transitions. [2023-11-19 04:51:46,769 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 549 transitions. Word has length 16 [2023-11-19 04:51:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:46,769 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 549 transitions. [2023-11-19 04:51:46,770 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 04:51:46,770 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 549 transitions. [2023-11-19 04:51:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:51:46,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:46,771 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 04:51:46,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:46,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:46,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1417657938, now seen corresponding path program 1 times [2023-11-19 04:51:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358364499] [2023-11-19 04:51:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:47,110 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 04:51:47,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358364499] [2023-11-19 04:51:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358364499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006458898] [2023-11-19 04:51:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:47,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:47,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:47,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:47,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:51:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:47,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:47,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:47,461 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 04:51:47,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:47,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006458898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:47,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:47,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:47,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784066641] [2023-11-19 04:51:47,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:47,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:47,464 INFO L87 Difference]: Start difference. First operand 416 states and 549 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 04:51:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:47,794 INFO L93 Difference]: Finished difference Result 616 states and 829 transitions. [2023-11-19 04:51:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:47,795 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 04:51:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:47,799 INFO L225 Difference]: With dead ends: 616 [2023-11-19 04:51:47,799 INFO L226 Difference]: Without dead ends: 615 [2023-11-19 04:51:47,799 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 04:51:47,800 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 256 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:47,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 929 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-19 04:51:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 420. [2023-11-19 04:51:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 316 states have (on average 1.5791139240506329) internal successors, (499), 385 states have internal predecessors, (499), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 554 transitions. [2023-11-19 04:51:47,825 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 554 transitions. Word has length 17 [2023-11-19 04:51:47,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:47,825 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 554 transitions. [2023-11-19 04:51:47,825 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 04:51:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 554 transitions. [2023-11-19 04:51:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:51:47,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:47,827 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 04:51:47,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:51:48,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:48,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1346592496, now seen corresponding path program 1 times [2023-11-19 04:51:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350662615] [2023-11-19 04:51:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:48,197 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 04:51:48,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350662615] [2023-11-19 04:51:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350662615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981295003] [2023-11-19 04:51:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:48,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:48,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:51:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:48,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:48,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:48,541 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 04:51:48,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981295003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538854207] [2023-11-19 04:51:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:48,543 INFO L87 Difference]: Start difference. First operand 420 states and 554 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 04:51:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:48,785 INFO L93 Difference]: Finished difference Result 420 states and 554 transitions. [2023-11-19 04:51:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:48,786 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 04:51:48,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:48,789 INFO L225 Difference]: With dead ends: 420 [2023-11-19 04:51:48,789 INFO L226 Difference]: Without dead ends: 419 [2023-11-19 04:51:48,789 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 04:51:48,790 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:48,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 939 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-19 04:51:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2023-11-19 04:51:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 314 states have (on average 1.5796178343949046) internal successors, (496), 382 states have internal predecessors, (496), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 551 transitions. [2023-11-19 04:51:48,811 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 551 transitions. Word has length 19 [2023-11-19 04:51:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:48,812 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 551 transitions. [2023-11-19 04:51:48,812 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 04:51:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 551 transitions. [2023-11-19 04:51:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:51:48,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:48,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:48,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:49,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:49,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:49,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1345183382, now seen corresponding path program 1 times [2023-11-19 04:51:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805131068] [2023-11-19 04:51:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:49,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:49,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805131068] [2023-11-19 04:51:49,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805131068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:49,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520562341] [2023-11-19 04:51:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:49,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:49,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:49,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:51:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:49,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:49,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:51:49,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520562341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:49,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949123786] [2023-11-19 04:51:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:49,498 INFO L87 Difference]: Start difference. First operand 417 states and 551 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 04:51:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:49,747 INFO L93 Difference]: Finished difference Result 425 states and 561 transitions. [2023-11-19 04:51:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:49,749 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 04:51:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:49,752 INFO L225 Difference]: With dead ends: 425 [2023-11-19 04:51:49,752 INFO L226 Difference]: Without dead ends: 424 [2023-11-19 04:51:49,753 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 04:51:49,753 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-19 04:51:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-11-19 04:51:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 321 states have (on average 1.573208722741433) internal successors, (505), 389 states have internal predecessors, (505), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 560 transitions. [2023-11-19 04:51:49,780 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 560 transitions. Word has length 19 [2023-11-19 04:51:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:49,780 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 560 transitions. [2023-11-19 04:51:49,780 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 04:51:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 560 transitions. [2023-11-19 04:51:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:51:49,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:49,787 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 04:51:49,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:50,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:51:50,009 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:51:50,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2009146905, now seen corresponding path program 1 times [2023-11-19 04:51:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:50,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574351733] [2023-11-19 04:51:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:50,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:50,130 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 04:51:50,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574351733] [2023-11-19 04:51:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574351733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186450439] [2023-11-19 04:51:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:50,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:50,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:50,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:51:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:50,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:50,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:50,505 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 04:51:50,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:50,527 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 04:51:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186450439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654951063] [2023-11-19 04:51:50,531 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 04:51:50,532 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:50,532 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:50,532 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:50,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:51:55,183 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-19 04:51:55,212 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:51:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [654951063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:57,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:51:57,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-11-19 04:51:57,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560649423] [2023-11-19 04:51:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:57,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:51:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:51:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-11-19 04:51:57,404 INFO L87 Difference]: Start difference. First operand 424 states and 560 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) [2023-11-19 04:51:59,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 04:52:01,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 04:52:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:06,283 INFO L93 Difference]: Finished difference Result 821 states and 1088 transitions. [2023-11-19 04:52:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:52:06,283 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 21 [2023-11-19 04:52:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:06,286 INFO L225 Difference]: With dead ends: 821 [2023-11-19 04:52:06,286 INFO L226 Difference]: Without dead ends: 424 [2023-11-19 04:52:06,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-11-19 04:52:06,288 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:06,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2278 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 966 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2023-11-19 04:52:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-19 04:52:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2023-11-19 04:52:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 321 states have (on average 1.5700934579439252) internal successors, (504), 389 states have internal predecessors, (504), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:52:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 559 transitions. [2023-11-19 04:52:06,310 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 559 transitions. Word has length 21 [2023-11-19 04:52:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:06,310 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 559 transitions. [2023-11-19 04:52:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-19 04:52:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 559 transitions. [2023-11-19 04:52:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 04:52:06,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:06,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:06,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 04:52:06,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:52:06,528 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [full_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, full_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-11-19 04:52:06,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 156902598, now seen corresponding path program 1 times [2023-11-19 04:52:06,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216395141] [2023-11-19 04:52:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:52:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:52:06,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:52:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216395141] [2023-11-19 04:52:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216395141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:52:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196616323] [2023-11-19 04:52:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:06,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:52:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:06,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:52:06,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6dcd19-db33-4702-a168-c605617c5c20/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:52:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:07,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:07,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:52:07,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:52:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196616323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769300878] [2023-11-19 04:52:07,061 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 04:52:07,062 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:52:07,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:52:07,062 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:52:07,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs