./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_rand_multiply_08_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/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_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_rand_multiply_08_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/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_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/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 a9c94ff3f7a4cc7959f300c80b9f2b63e79e2db35d5e30d3783ff95bcb9ac78c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:18:14,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:18:14,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:18:14,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:18:14,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:18:14,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:18:14,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:18:14,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:18:14,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:18:14,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:18:14,527 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:18:14,528 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:18:14,528 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:18:14,530 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:18:14,530 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:18:14,531 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:18:14,531 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:18:14,532 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:18:14,532 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:18:14,533 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:18:14,533 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:18:14,534 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:18:14,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:18:14,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:18:14,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:18:14,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:18:14,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:18:14,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:18:14,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:18:14,538 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:18:14,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:18:14,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:18:14,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:18:14,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:18:14,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:18:14,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:14,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:18:14,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:18:14,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:18:14,542 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:18:14,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:18:14,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:18:14,542 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:18:14,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:18:14,543 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_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9c94ff3f7a4cc7959f300c80b9f2b63e79e2db35d5e30d3783ff95bcb9ac78c [2023-11-19 04:18:14,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:18:14,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:18:14,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:18:14,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:18:14,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:18:14,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_rand_multiply_08_good.i [2023-11-19 04:18:18,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:18:19,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:18:19,100 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_rand_multiply_08_good.i [2023-11-19 04:18:19,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/data/1d3c5af46/a4dd7097f89f44bbbb8ff917fa2bd9a1/FLAG94ff674bc [2023-11-19 04:18:19,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/data/1d3c5af46/a4dd7097f89f44bbbb8ff917fa2bd9a1 [2023-11-19 04:18:19,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:18:19,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:18:19,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:19,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:18:19,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:18:19,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d518dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:19, skipping insertion in model container [2023-11-19 04:18:19,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:19" (1/1) ... [2023-11-19 04:18:19,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:18:19,640 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:18:20,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:20,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:18:20,157 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:18:20,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:20,430 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:20,430 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:20,430 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:20,430 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:20,431 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:20,438 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:18:20,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20 WrapperNode [2023-11-19 04:18:20,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:20,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:20,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:18:20,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:18:20,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,554 INFO L138 Inliner]: procedures = 505, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2023-11-19 04:18:20,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:20,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:18:20,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:18:20,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:18:20,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:18:20,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:18:20,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:18:20,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:18:20,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (1/1) ... [2023-11-19 04:18:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:20,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:18:20,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:18:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-19 04:18:20,739 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-19 04:18:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:18:20,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:18:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:18:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:18:20,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:18:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2023-11-19 04:18:20,741 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2023-11-19 04:18:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsFalse [2023-11-19 04:18:20,741 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsFalse [2023-11-19 04:18:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:18:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:18:20,938 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:18:20,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:18:21,345 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:18:21,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:18:21,708 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:18:21,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:21 BoogieIcfgContainer [2023-11-19 04:18:21,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:18:21,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:18:21,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:18:21,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:18:21,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:18:19" (1/3) ... [2023-11-19 04:18:21,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91e2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:21, skipping insertion in model container [2023-11-19 04:18:21,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:20" (2/3) ... [2023-11-19 04:18:21,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91e2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:21, skipping insertion in model container [2023-11-19 04:18:21,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:21" (3/3) ... [2023-11-19 04:18:21,722 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_rand_multiply_08_good.i [2023-11-19 04:18:21,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:18:21,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 04:18:21,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:18:21,798 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;@6da4f17c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:18:21,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 04:18:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 54 states have internal predecessors, (61), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 04:18:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:18:21,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:21,811 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 04:18:21,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:21,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 420730954, now seen corresponding path program 1 times [2023-11-19 04:18:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592331107] [2023-11-19 04:18:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:21,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:22,342 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 04:18:22,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:22,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592331107] [2023-11-19 04:18:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592331107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:22,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:22,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838951050] [2023-11-19 04:18:22,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:22,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:22,391 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 54 states have internal predecessors, (61), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:18:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:22,487 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2023-11-19 04:18:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-11-19 04:18:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:22,499 INFO L225 Difference]: With dead ends: 74 [2023-11-19 04:18:22,500 INFO L226 Difference]: Without dead ends: 67 [2023-11-19 04:18:22,503 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 04:18:22,508 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 5 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:22,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-19 04:18:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-11-19 04:18:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 49 states have internal predecessors, (54), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:18:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2023-11-19 04:18:22,560 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 17 [2023-11-19 04:18:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:22,561 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-19 04:18:22,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:18:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2023-11-19 04:18:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:18:22,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:22,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:22,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:18:22,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:22,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 157757833, now seen corresponding path program 1 times [2023-11-19 04:18:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:22,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257119740] [2023-11-19 04:18:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:22,685 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 04:18:22,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257119740] [2023-11-19 04:18:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257119740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:22,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226468351] [2023-11-19 04:18:22,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:22,689 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:18:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:22,748 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2023-11-19 04:18:22,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-11-19 04:18:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:22,753 INFO L225 Difference]: With dead ends: 67 [2023-11-19 04:18:22,753 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 04:18:22,756 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 04:18:22,757 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:22,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:22,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 04:18:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-19 04:18:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.358974358974359) internal successors, (53), 48 states have internal predecessors, (53), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:18:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2023-11-19 04:18:22,775 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 18 [2023-11-19 04:18:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:22,776 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2023-11-19 04:18:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:18:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2023-11-19 04:18:22,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:18:22,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:22,779 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:18:22,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:22,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash 466226995, now seen corresponding path program 1 times [2023-11-19 04:18:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461736267] [2023-11-19 04:18:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:18:23,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461736267] [2023-11-19 04:18:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461736267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:23,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:23,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134652797] [2023-11-19 04:18:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:23,017 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:18:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:23,085 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2023-11-19 04:18:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:23,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2023-11-19 04:18:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:23,087 INFO L225 Difference]: With dead ends: 66 [2023-11-19 04:18:23,087 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 04:18:23,088 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 04:18:23,089 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:23,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 136 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 04:18:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2023-11-19 04:18:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 states have internal predecessors, (52), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:18:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2023-11-19 04:18:23,100 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 28 [2023-11-19 04:18:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:23,100 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2023-11-19 04:18:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:18:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2023-11-19 04:18:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:18:23,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:23,102 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:23,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:18:23,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:23,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1568135212, now seen corresponding path program 1 times [2023-11-19 04:18:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726937492] [2023-11-19 04:18:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:18:23,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726937492] [2023-11-19 04:18:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726937492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:23,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:23,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:23,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744422170] [2023-11-19 04:18:23,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:23,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:23,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:23,215 INFO L87 Difference]: Start difference. First operand 64 states and 84 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:18:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:23,261 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2023-11-19 04:18:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:23,262 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2023-11-19 04:18:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:23,264 INFO L225 Difference]: With dead ends: 65 [2023-11-19 04:18:23,264 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:18:23,264 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 04:18:23,266 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:23,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:18:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2023-11-19 04:18:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 46 states have internal predecessors, (51), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:18:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2023-11-19 04:18:23,286 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 29 [2023-11-19 04:18:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:23,287 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2023-11-19 04:18:23,288 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:18:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2023-11-19 04:18:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 04:18:23,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:23,290 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:18:23,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:23,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2066076104, now seen corresponding path program 1 times [2023-11-19 04:18:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178273614] [2023-11-19 04:18:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:18:23,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178273614] [2023-11-19 04:18:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178273614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:23,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456673325] [2023-11-19 04:18:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:23,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:23,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:18:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:23,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:18:23,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:18:23,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456673325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:23,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:18:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261216608] [2023-11-19 04:18:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:23,676 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:18:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:23,735 INFO L93 Difference]: Finished difference Result 86 states and 111 transitions. [2023-11-19 04:18:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2023-11-19 04:18:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:23,739 INFO L225 Difference]: With dead ends: 86 [2023-11-19 04:18:23,739 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 04:18:23,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:23,742 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 5 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:23,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 04:18:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-11-19 04:18:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.302325581395349) internal successors, (56), 49 states have internal predecessors, (56), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 90 transitions. [2023-11-19 04:18:23,753 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 90 transitions. Word has length 38 [2023-11-19 04:18:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:23,754 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 90 transitions. [2023-11-19 04:18:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:18:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 90 transitions. [2023-11-19 04:18:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:18:23,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:23,756 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:23,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:23,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:23,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:23,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash 376150505, now seen corresponding path program 1 times [2023-11-19 04:18:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:23,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418596832] [2023-11-19 04:18:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:18:24,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418596832] [2023-11-19 04:18:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418596832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965961418] [2023-11-19 04:18:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:24,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:24,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:18:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:24,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:18:24,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:18:24,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965961418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:24,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:24,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:18:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164742537] [2023-11-19 04:18:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:24,330 INFO L87 Difference]: Start difference. First operand 68 states and 90 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:18:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:24,377 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2023-11-19 04:18:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 39 [2023-11-19 04:18:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:24,381 INFO L225 Difference]: With dead ends: 68 [2023-11-19 04:18:24,381 INFO L226 Difference]: Without dead ends: 67 [2023-11-19 04:18:24,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:24,386 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:24,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-19 04:18:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-19 04:18:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 48 states have internal predecessors, (55), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2023-11-19 04:18:24,406 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 39 [2023-11-19 04:18:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:24,410 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2023-11-19 04:18:24,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:18:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2023-11-19 04:18:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 04:18:24,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:24,413 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:24,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:24,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:18:24,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:24,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1035769016, now seen corresponding path program 1 times [2023-11-19 04:18:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898110031] [2023-11-19 04:18:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:18:24,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898110031] [2023-11-19 04:18:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898110031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528205176] [2023-11-19 04:18:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:24,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:24,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:24,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:18:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:24,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:18:24,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 04:18:24,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528205176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:24,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:24,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 04:18:24,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944789117] [2023-11-19 04:18:24,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:24,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:24,941 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:18:24,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:24,979 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-11-19 04:18:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 41 [2023-11-19 04:18:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:24,982 INFO L225 Difference]: With dead ends: 86 [2023-11-19 04:18:24,982 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 04:18:24,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:24,984 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 04:18:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-19 04:18:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 46 states have internal predecessors, (52), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2023-11-19 04:18:25,000 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 41 [2023-11-19 04:18:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2023-11-19 04:18:25,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:18:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2023-11-19 04:18:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:18:25,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:25,009 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:25,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:25,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:25,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:25,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1768782892, now seen corresponding path program 1 times [2023-11-19 04:18:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790737591] [2023-11-19 04:18:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:25,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:25,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790737591] [2023-11-19 04:18:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790737591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:25,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382537355] [2023-11-19 04:18:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:25,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:25,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:25,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:25,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:18:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:25,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:18:25,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 04:18:25,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:25,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382537355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:25,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:25,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:18:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33350435] [2023-11-19 04:18:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:25,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:25,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:25,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:25,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:25,595 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 04:18:25,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:25,634 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2023-11-19 04:18:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:25,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 48 [2023-11-19 04:18:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:25,638 INFO L225 Difference]: With dead ends: 65 [2023-11-19 04:18:25,638 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:18:25,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:18:25,639 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 2 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:25,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 138 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:18:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 04:18:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2023-11-19 04:18:25,662 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 48 [2023-11-19 04:18:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:25,663 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2023-11-19 04:18:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-19 04:18:25,667 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2023-11-19 04:18:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 04:18:25,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:25,670 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:25,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:25,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:25,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1002305514, now seen corresponding path program 1 times [2023-11-19 04:18:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772215179] [2023-11-19 04:18:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:26,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:26,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772215179] [2023-11-19 04:18:26,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772215179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:26,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572659378] [2023-11-19 04:18:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:26,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:26,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:18:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:26,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:18:26,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:18:26,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572659378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:26,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 04:18:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698911018] [2023-11-19 04:18:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:26,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:26,171 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:18:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:26,206 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2023-11-19 04:18:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2023-11-19 04:18:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:26,208 INFO L225 Difference]: With dead ends: 99 [2023-11-19 04:18:26,208 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:18:26,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:26,211 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:26,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:18:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 04:18:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 45 states have internal predecessors, (50), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2023-11-19 04:18:26,218 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 49 [2023-11-19 04:18:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2023-11-19 04:18:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:18:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2023-11-19 04:18:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:18:26,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:26,222 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:26,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:26,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:26,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:26,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1534759470, now seen corresponding path program 1 times [2023-11-19 04:18:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:26,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119472679] [2023-11-19 04:18:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:26,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119472679] [2023-11-19 04:18:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119472679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422463981] [2023-11-19 04:18:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:26,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:26,569 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:26,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:18:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:26,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:18:26,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:18:26,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:18:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422463981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:18:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 04:18:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205921931] [2023-11-19 04:18:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:26,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:26,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:26,741 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:18:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:26,776 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-11-19 04:18:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-11-19 04:18:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:26,780 INFO L225 Difference]: With dead ends: 76 [2023-11-19 04:18:26,780 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:18:26,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:26,782 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:26,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:18:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 04:18:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 04:18:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2023-11-19 04:18:26,793 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 50 [2023-11-19 04:18:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:26,793 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2023-11-19 04:18:26,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 04:18:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2023-11-19 04:18:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:18:26,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:26,796 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:26,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:18:27,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:27,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:27,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -131666061, now seen corresponding path program 1 times [2023-11-19 04:18:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:27,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803913544] [2023-11-19 04:18:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:27,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 04:18:27,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803913544] [2023-11-19 04:18:27,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803913544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:27,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:18:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736926486] [2023-11-19 04:18:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:27,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:18:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:18:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:27,121 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:18:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:27,156 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2023-11-19 04:18:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:18:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2023-11-19 04:18:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:27,157 INFO L225 Difference]: With dead ends: 78 [2023-11-19 04:18:27,157 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 04:18:27,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:18:27,158 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:27,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 04:18:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-19 04:18:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 04:18:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-11-19 04:18:27,164 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 54 [2023-11-19 04:18:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:27,164 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-11-19 04:18:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:18:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-11-19 04:18:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 04:18:27,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:27,166 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:18:27,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-19 04:18:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1964642688, now seen corresponding path program 1 times [2023-11-19 04:18:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131668219] [2023-11-19 04:18:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:27,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131668219] [2023-11-19 04:18:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131668219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:18:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046068475] [2023-11-19 04:18:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:27,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:18:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:27,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:18:27,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca6f3af1-c7ac-4d94-b56b-e5b39d6f9d45/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:18:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:27,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:18:27,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:27,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:18:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:18:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046068475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:18:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2108130393] [2023-11-19 04:18:27,643 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-19 04:18:27,643 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:18:27,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:18:27,654 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:18:27,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:19:06,298 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsTrue with input of size 24 for LOIs [2023-11-19 04:19:06,301 INFO L197 IcfgInterpreter]: Interpreting procedure printIntLine with input of size 401 for LOIs [2023-11-19 04:19:06,835 INFO L197 IcfgInterpreter]: Interpreting procedure staticReturnsFalse with input of size 411 for LOIs [2023-11-19 04:19:07,723 INFO L197 IcfgInterpreter]: Interpreting procedure printLine with input of size 73 for LOIs [2023-11-19 04:19:07,735 INFO L180 IcfgInterpreter]: Interpretation finished