./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5 --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 ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:04:55,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:04:56,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 19:04:56,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:04:56,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:04:56,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:04:56,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:04:56,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:04:56,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:04:56,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:04:56,154 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:04:56,155 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:04:56,158 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:04:56,163 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:04:56,163 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:04:56,164 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:04:56,165 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:04:56,166 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:04:56,166 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:04:56,167 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:04:56,169 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:04:56,169 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:04:56,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:04:56,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:04:56,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:04:56,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:04:56,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:04:56,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:04:56,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:04:56,174 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:04:56,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:04:56,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:04:56,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:04:56,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:04:56,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:04:56,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:04:56,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:04:56,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:04:56,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:04:56,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:04:56,179 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:04:56,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:04:56,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:04:56,180 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:04:56,180 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:04:56,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:04:56,181 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_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 [2023-11-21 19:04:56,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:04:56,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:04:56,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:04:56,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:04:56,553 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:04:56,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-21 19:04:59,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:04:59,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:04:59,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-21 19:04:59,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/data/d764d4072/83aa673c88c844219efa6e16564e1c6d/FLAG14ea678e2 [2023-11-21 19:04:59,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/data/d764d4072/83aa673c88c844219efa6e16564e1c6d [2023-11-21 19:04:59,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:04:59,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:04:59,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:04:59,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:05:00,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:05:00,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:59" (1/1) ... [2023-11-21 19:05:00,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f48422c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:00, skipping insertion in model container [2023-11-21 19:05:00,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:04:59" (1/1) ... [2023-11-21 19:05:00,095 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:05:01,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:05:01,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:05:01,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:05:01,973 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:05:01,973 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:05:01,981 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:05:01,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01 WrapperNode [2023-11-21 19:05:01,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:05:01,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:05:01,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:05:01,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:05:01,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,143 INFO L138 Inliner]: procedures = 598, calls = 177, calls flagged for inlining = 19, calls inlined = 17, statements flattened = 624 [2023-11-21 19:05:02,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:05:02,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:05:02,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:05:02,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:05:02,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:05:02,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:05:02,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:05:02,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:05:02,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (1/1) ... [2023-11-21 19:05:02,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:05:02,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:02,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:05:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:05:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:05:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 19:05:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:05:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:05:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:05:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 19:05:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:05:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:05:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:05:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:05:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 19:05:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 19:05:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 19:05:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:05:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:05:02,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:05:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:05:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:05:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:05:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-21 19:05:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 19:05:02,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 19:05:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:05:02,781 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:05:02,784 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:05:03,682 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:05:03,834 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:05:03,834 INFO L308 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-21 19:05:03,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:05:03 BoogieIcfgContainer [2023-11-21 19:05:03,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:05:03,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:05:03,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:05:03,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:05:03,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:04:59" (1/3) ... [2023-11-21 19:05:03,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427e490f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:05:03, skipping insertion in model container [2023-11-21 19:05:03,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:05:01" (2/3) ... [2023-11-21 19:05:03,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427e490f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:05:03, skipping insertion in model container [2023-11-21 19:05:03,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:05:03" (3/3) ... [2023-11-21 19:05:03,844 INFO L112 eAbstractionObserver]: Analyzing ICFG usleep-2.i [2023-11-21 19:05:03,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:05:03,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-21 19:05:03,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:05:03,925 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;@43cb67f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:05:03,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-21 19:05:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 136 states have internal predecessors, (174), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-21 19:05:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 19:05:03,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:03,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 19:05:03,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:03,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 523033, now seen corresponding path program 1 times [2023-11-21 19:05:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149691240] [2023-11-21 19:05:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:04,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149691240] [2023-11-21 19:05:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149691240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:04,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:05:04,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896720926] [2023-11-21 19:05:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:04,582 INFO L87 Difference]: Start difference. First operand has 150 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 136 states have internal predecessors, (174), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:04,747 INFO L93 Difference]: Finished difference Result 296 states and 389 transitions. [2023-11-21 19:05:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 19:05:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:04,764 INFO L225 Difference]: With dead ends: 296 [2023-11-21 19:05:04,765 INFO L226 Difference]: Without dead ends: 146 [2023-11-21 19:05:04,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:04,785 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:04,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 316 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-21 19:05:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-21 19:05:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 100 states have (on average 1.63) internal successors, (163), 134 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 181 transitions. [2023-11-21 19:05:04,866 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 181 transitions. Word has length 3 [2023-11-21 19:05:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:04,866 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 181 transitions. [2023-11-21 19:05:04,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 181 transitions. [2023-11-21 19:05:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:05:04,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:04,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 19:05:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:05:04,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:04,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882429, now seen corresponding path program 1 times [2023-11-21 19:05:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857617476] [2023-11-21 19:05:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:04,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:05,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857617476] [2023-11-21 19:05:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857617476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131532434] [2023-11-21 19:05:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:05,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:05,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:05,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:05,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:05:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:05,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:05,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:05,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131532434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:05,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-21 19:05:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853781196] [2023-11-21 19:05:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:05:05,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:05:05,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:05,318 INFO L87 Difference]: Start difference. First operand 146 states and 181 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:05,424 INFO L93 Difference]: Finished difference Result 146 states and 181 transitions. [2023-11-21 19:05:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:05:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:05:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:05,430 INFO L225 Difference]: With dead ends: 146 [2023-11-21 19:05:05,430 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 19:05:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:05,436 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:05,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 306 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 19:05:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-21 19:05:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 100 states have (on average 1.62) internal successors, (162), 133 states have internal predecessors, (162), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 180 transitions. [2023-11-21 19:05:05,459 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 180 transitions. Word has length 6 [2023-11-21 19:05:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:05,460 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 180 transitions. [2023-11-21 19:05:05,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 180 transitions. [2023-11-21 19:05:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 19:05:05,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:05,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-21 19:05:05,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:05,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:05,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2005252566, now seen corresponding path program 1 times [2023-11-21 19:05:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367716708] [2023-11-21 19:05:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:05,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367716708] [2023-11-21 19:05:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367716708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:05:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:05:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302996200] [2023-11-21 19:05:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:05,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:05:05,767 INFO L87 Difference]: Start difference. First operand 145 states and 180 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:05,834 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2023-11-21 19:05:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:05,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 19:05:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:05,836 INFO L225 Difference]: With dead ends: 145 [2023-11-21 19:05:05,859 INFO L226 Difference]: Without dead ends: 144 [2023-11-21 19:05:05,860 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 [2023-11-21 19:05:05,861 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:05,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-21 19:05:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-11-21 19:05:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 98 states have (on average 1.6224489795918366) internal successors, (159), 130 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2023-11-21 19:05:05,874 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 7 [2023-11-21 19:05:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:05,875 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2023-11-21 19:05:05,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:05:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2023-11-21 19:05:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:05:05,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:05,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:05,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:05:05,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:05,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1161888916, now seen corresponding path program 1 times [2023-11-21 19:05:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823780557] [2023-11-21 19:05:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:05,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823780557] [2023-11-21 19:05:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823780557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111177579] [2023-11-21 19:05:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:05,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:05,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:06,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:05:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:06,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:06,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:06,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111177579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573485226] [2023-11-21 19:05:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:06,197 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:06,272 INFO L93 Difference]: Finished difference Result 142 states and 177 transitions. [2023-11-21 19:05:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 19:05:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:06,274 INFO L225 Difference]: With dead ends: 142 [2023-11-21 19:05:06,274 INFO L226 Difference]: Without dead ends: 140 [2023-11-21 19:05:06,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:06,275 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:06,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 241 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:06,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-21 19:05:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-21 19:05:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.6020408163265305) internal successors, (157), 128 states have internal predecessors, (157), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 175 transitions. [2023-11-21 19:05:06,286 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 175 transitions. Word has length 9 [2023-11-21 19:05:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:06,287 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 175 transitions. [2023-11-21 19:05:06,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 175 transitions. [2023-11-21 19:05:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:05:06,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:06,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:06,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:06,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:06,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1658817706, now seen corresponding path program 1 times [2023-11-21 19:05:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47155701] [2023-11-21 19:05:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:06,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:06,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47155701] [2023-11-21 19:05:06,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47155701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:06,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775811396] [2023-11-21 19:05:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:06,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:06,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:06,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:05:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:06,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:06,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:06,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775811396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [781170846] [2023-11-21 19:05:06,954 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-21 19:05:06,954 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:06,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:06,964 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:06,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:05:10,310 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-21 19:05:10,341 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:05:11,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [781170846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:11,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:05:11,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-21 19:05:11,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446226814] [2023-11-21 19:05:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:11,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:05:11,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:05:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:05:11,544 INFO L87 Difference]: Start difference. First operand 140 states and 175 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:13,400 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2023-11-21 19:05:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:05:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-21 19:05:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:13,403 INFO L225 Difference]: With dead ends: 142 [2023-11-21 19:05:13,403 INFO L226 Difference]: Without dead ends: 140 [2023-11-21 19:05:13,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:05:13,404 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 3 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:13,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 815 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-21 19:05:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-21 19:05:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-21 19:05:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.5757575757575757) internal successors, (156), 127 states have internal predecessors, (156), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2023-11-21 19:05:13,418 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 10 [2023-11-21 19:05:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:13,419 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2023-11-21 19:05:13,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2023-11-21 19:05:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:05:13,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:13,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:13,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:13,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:13,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2036288409, now seen corresponding path program 1 times [2023-11-21 19:05:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967483347] [2023-11-21 19:05:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:13,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:13,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967483347] [2023-11-21 19:05:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967483347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461318467] [2023-11-21 19:05:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:13,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:13,816 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:13,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:05:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:14,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:14,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:14,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461318467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:14,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:14,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856639565] [2023-11-21 19:05:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:14,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:14,082 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:14,161 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2023-11-21 19:05:14,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:14,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-21 19:05:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:14,163 INFO L225 Difference]: With dead ends: 140 [2023-11-21 19:05:14,164 INFO L226 Difference]: Without dead ends: 139 [2023-11-21 19:05:14,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:14,165 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 7 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:14,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 287 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-21 19:05:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-21 19:05:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 99 states have (on average 1.5656565656565657) internal successors, (155), 126 states have internal predecessors, (155), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 173 transitions. [2023-11-21 19:05:14,178 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 173 transitions. Word has length 15 [2023-11-21 19:05:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:14,179 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 173 transitions. [2023-11-21 19:05:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 173 transitions. [2023-11-21 19:05:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:05:14,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:14,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:14,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:14,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:14,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:14,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2036282169, now seen corresponding path program 1 times [2023-11-21 19:05:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:14,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680564146] [2023-11-21 19:05:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:14,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:14,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680564146] [2023-11-21 19:05:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680564146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728284899] [2023-11-21 19:05:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:14,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:14,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:14,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:05:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:14,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:14,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:14,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728284899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341661320] [2023-11-21 19:05:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:14,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:14,820 INFO L87 Difference]: Start difference. First operand 139 states and 173 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:14,892 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2023-11-21 19:05:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-21 19:05:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:14,896 INFO L225 Difference]: With dead ends: 139 [2023-11-21 19:05:14,896 INFO L226 Difference]: Without dead ends: 138 [2023-11-21 19:05:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:14,897 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:14,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 291 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-21 19:05:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-21 19:05:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.5555555555555556) internal successors, (154), 125 states have internal predecessors, (154), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 172 transitions. [2023-11-21 19:05:14,907 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 172 transitions. Word has length 15 [2023-11-21 19:05:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:14,908 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 172 transitions. [2023-11-21 19:05:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 172 transitions. [2023-11-21 19:05:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:05:14,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:14,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:14,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:15,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1299568405, now seen corresponding path program 1 times [2023-11-21 19:05:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131504200] [2023-11-21 19:05:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:15,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131504200] [2023-11-21 19:05:15,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131504200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928299814] [2023-11-21 19:05:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:15,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:15,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:15,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:05:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:15,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:15,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:15,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928299814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31471578] [2023-11-21 19:05:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:15,499 INFO L87 Difference]: Start difference. First operand 138 states and 172 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:15,600 INFO L93 Difference]: Finished difference Result 146 states and 182 transitions. [2023-11-21 19:05:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:15,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-21 19:05:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:15,602 INFO L225 Difference]: With dead ends: 146 [2023-11-21 19:05:15,602 INFO L226 Difference]: Without dead ends: 145 [2023-11-21 19:05:15,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:15,603 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:15,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 290 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-21 19:05:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2023-11-21 19:05:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.5523809523809524) internal successors, (163), 131 states have internal predecessors, (163), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 181 transitions. [2023-11-21 19:05:15,614 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 181 transitions. Word has length 16 [2023-11-21 19:05:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:15,614 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 181 transitions. [2023-11-21 19:05:15,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 181 transitions. [2023-11-21 19:05:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:05:15,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:15,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:15,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:15,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:15,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1299761854, now seen corresponding path program 1 times [2023-11-21 19:05:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:15,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976732551] [2023-11-21 19:05:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:15,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976732551] [2023-11-21 19:05:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976732551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334376747] [2023-11-21 19:05:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:15,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:15,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:05:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:16,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:16,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:05:16,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:16,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334376747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:16,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:16,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932205307] [2023-11-21 19:05:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:16,192 INFO L87 Difference]: Start difference. First operand 144 states and 181 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:16,269 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2023-11-21 19:05:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:16,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-21 19:05:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:16,271 INFO L225 Difference]: With dead ends: 278 [2023-11-21 19:05:16,271 INFO L226 Difference]: Without dead ends: 150 [2023-11-21 19:05:16,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:16,273 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:16,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 292 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-21 19:05:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-21 19:05:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 137 states have internal predecessors, (169), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 187 transitions. [2023-11-21 19:05:16,283 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 187 transitions. Word has length 16 [2023-11-21 19:05:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:16,283 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 187 transitions. [2023-11-21 19:05:16,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 187 transitions. [2023-11-21 19:05:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:05:16,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:16,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:16,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-21 19:05:16,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:16,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:16,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1292697480, now seen corresponding path program 1 times [2023-11-21 19:05:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847139279] [2023-11-21 19:05:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:16,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:16,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847139279] [2023-11-21 19:05:16,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847139279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:16,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621643339] [2023-11-21 19:05:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:16,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:16,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:16,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:16,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:05:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:16,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:16,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:16,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:05:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621643339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1322045328] [2023-11-21 19:05:16,990 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-21 19:05:16,990 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:16,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:16,991 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:16,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:05:18,785 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-21 19:05:18,811 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:05:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1322045328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:05:20,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-21 19:05:20,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313365555] [2023-11-21 19:05:20,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:20,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 19:05:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 19:05:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-21 19:05:20,526 INFO L87 Difference]: Start difference. First operand 150 states and 187 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:22,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 19:05:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:23,677 INFO L93 Difference]: Finished difference Result 268 states and 336 transitions. [2023-11-21 19:05:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:05:23,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-21 19:05:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:23,682 INFO L225 Difference]: With dead ends: 268 [2023-11-21 19:05:23,683 INFO L226 Difference]: Without dead ends: 150 [2023-11-21 19:05:23,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-21 19:05:23,684 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:23,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 612 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-11-21 19:05:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-21 19:05:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-21 19:05:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.5135135135135136) internal successors, (168), 137 states have internal predecessors, (168), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 186 transitions. [2023-11-21 19:05:23,697 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 186 transitions. Word has length 16 [2023-11-21 19:05:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:23,697 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 186 transitions. [2023-11-21 19:05:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 186 transitions. [2023-11-21 19:05:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:05:23,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:23,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:23,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:23,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:05:23,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:23,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2074879370, now seen corresponding path program 1 times [2023-11-21 19:05:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100407074] [2023-11-21 19:05:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 19:05:24,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100407074] [2023-11-21 19:05:24,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100407074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668885880] [2023-11-21 19:05:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:24,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 19:05:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:24,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:05:24,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:05:24,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:05:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668885880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:05:24,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:05:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-21 19:05:24,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835017875] [2023-11-21 19:05:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:05:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:05:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:05:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:24,334 INFO L87 Difference]: Start difference. First operand 150 states and 186 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:24,418 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2023-11-21 19:05:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:05:24,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-21 19:05:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:24,421 INFO L225 Difference]: With dead ends: 150 [2023-11-21 19:05:24,421 INFO L226 Difference]: Without dead ends: 149 [2023-11-21 19:05:24,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:05:24,422 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:24,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-21 19:05:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2023-11-21 19:05:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.514018691588785) internal successors, (162), 132 states have internal predecessors, (162), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 180 transitions. [2023-11-21 19:05:24,435 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 180 transitions. Word has length 19 [2023-11-21 19:05:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:24,435 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 180 transitions. [2023-11-21 19:05:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 180 transitions. [2023-11-21 19:05:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:05:24,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:24,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:24,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-21 19:05:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:24,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:24,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1023576897, now seen corresponding path program 1 times [2023-11-21 19:05:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121604364] [2023-11-21 19:05:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:05:24,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:24,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121604364] [2023-11-21 19:05:24,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121604364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:24,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132895067] [2023-11-21 19:05:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:24,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:24,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:24,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 19:05:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:25,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:25,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:05:25,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:05:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132895067] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:25,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [259073256] [2023-11-21 19:05:25,190 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-21 19:05:25,190 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:25,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:25,191 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:25,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:05:31,252 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-21 19:05:31,274 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:05:35,356 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5026#(and (= |ULTIMATE.start_xatou_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (exists ((|v_#valid_112| (Array Int Int))) (and (= (select |v_#valid_112| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) 0) (= (store |v_#valid_112| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 1) |#valid|))) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= |ULTIMATE.start___main_~argv#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.offset| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) 8) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) 8) 0))) (= |ULTIMATE.start_xatou_sfx_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start___main_#t~mem108#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) 8)) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.offset| 0) (= |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.offset| 0) (= 10 |ULTIMATE.start_xstrtou_range_sfx_~base#1|) (<= (+ 2147483640 |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1|) 0) (= ~msg_eol~0.base 3) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) 8) |ULTIMATE.start___main_#t~mem108#1.offset|) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (<= 1 |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~tmp_if_expr$1~1#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xatou_sfx_~numstr#1.base|) (= ~bb_errno~0.base 8) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start___main_#in~argv#1.offset| 0) (= |ULTIMATE.start___main_~argv#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= 0 |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~upper#1| 4294967295) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= ~msg_eol~0.offset 0) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~base#1| 10) (= |~#bb_errno_location~0.base| 8) (= |ULTIMATE.start___main_#t~mem108#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_sfx_~numstr#1.offset|) (= ~applet_name~0.offset 0) (= ~logmode~0 1) (= |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1| (select (select |#memory_int| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset|)) (= 4294967295 |ULTIMATE.start_xstrtou_range_sfx_~upper#1|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~lower#1| 0) (exists ((|v_#length_70| (Array Int Int))) (= (store |v_#length_70| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 8) |#length|)) (= 10 |~#dummy_utmp~0.base|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_~numstr#1.offset|) (= |ULTIMATE.start___main_#in~argc#1| |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_~argc#1| |ULTIMATE.start___main_#in~argc#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~lower#1| 0) (= |ULTIMATE.start___main_#t~mem108#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_main_~argv~0#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= |~#die_jmp~0.offset| 0) (<= |ULTIMATE.start_main_~argc~0#1| 10000) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.offset| 0) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) (= |~#die_jmp~0.base| 9) (= ~die_sleep~0 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|))' at error location [2023-11-21 19:05:35,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:05:35,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:05:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-21 19:05:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896136240] [2023-11-21 19:05:35,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:05:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:05:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:05:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:05:35,358 INFO L87 Difference]: Start difference. First operand 145 states and 180 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:05:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:35,519 INFO L93 Difference]: Finished difference Result 294 states and 366 transitions. [2023-11-21 19:05:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:05:35,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-21 19:05:35,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:35,521 INFO L225 Difference]: With dead ends: 294 [2023-11-21 19:05:35,522 INFO L226 Difference]: Without dead ends: 154 [2023-11-21 19:05:35,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:05:35,523 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:35,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 584 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:05:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-21 19:05:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-21 19:05:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 141 states have internal predecessors, (171), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2023-11-21 19:05:35,537 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 23 [2023-11-21 19:05:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:35,537 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2023-11-21 19:05:35,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:05:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2023-11-21 19:05:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 19:05:35,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:35,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:35,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-21 19:05:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 19:05:35,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:35,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 386220201, now seen corresponding path program 2 times [2023-11-21 19:05:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532777325] [2023-11-21 19:05:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 19:05:35,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532777325] [2023-11-21 19:05:35,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532777325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820594171] [2023-11-21 19:05:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:05:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:35,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:35,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 19:05:36,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 19:05:36,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:05:36,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:05:36,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 19:05:36,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 19:05:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820594171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467363339] [2023-11-21 19:05:36,520 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-21 19:05:36,521 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:36,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:36,522 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:36,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:05:42,210 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-21 19:05:42,227 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:05:46,532 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5779#(and (= |ULTIMATE.start_xatou_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= |ULTIMATE.start___main_~argv#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.offset| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) 8) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) 8) 0))) (= |ULTIMATE.start_xatou_sfx_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start___main_#t~mem108#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) 8)) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.offset| 0) (= |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.offset| 0) (= 10 |ULTIMATE.start_xstrtou_range_sfx_~base#1|) (<= (+ 2147483640 |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1|) 0) (= ~msg_eol~0.base 3) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) 8) |ULTIMATE.start___main_#t~mem108#1.offset|) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (<= 1 |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~tmp_if_expr$1~1#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xatou_sfx_~numstr#1.base|) (= ~bb_errno~0.base 8) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start___main_#in~argv#1.offset| 0) (= |ULTIMATE.start___main_~argv#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= 0 |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~upper#1| 4294967295) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= ~msg_eol~0.offset 0) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~base#1| 10) (= |~#bb_errno_location~0.base| 8) (= |ULTIMATE.start___main_#t~mem108#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_sfx_~numstr#1.offset|) (= ~applet_name~0.offset 0) (= ~logmode~0 1) (= |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1| (select (select |#memory_int| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset|)) (= 4294967295 |ULTIMATE.start_xstrtou_range_sfx_~upper#1|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~lower#1| 0) (exists ((|v_#valid_125| (Array Int Int))) (and (= (store |v_#valid_125| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 1) |#valid|) (= (select |v_#valid_125| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) 0))) (= 10 |~#dummy_utmp~0.base|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_~numstr#1.offset|) (= |ULTIMATE.start___main_#in~argc#1| |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_~argc#1| |ULTIMATE.start___main_#in~argc#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~lower#1| 0) (= |ULTIMATE.start___main_#t~mem108#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_main_~argv~0#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= |~#die_jmp~0.offset| 0) (<= |ULTIMATE.start_main_~argc~0#1| 10000) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.offset| 0) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) (exists ((|v_#length_83| (Array Int Int))) (= (store |v_#length_83| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 8) |#length|)) (= |~#die_jmp~0.base| 9) (= ~die_sleep~0 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|))' at error location [2023-11-21 19:05:46,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:05:46,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:05:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-21 19:05:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863120532] [2023-11-21 19:05:46,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:05:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:05:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:05:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:05:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:05:46,535 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:05:46,716 INFO L93 Difference]: Finished difference Result 300 states and 374 transitions. [2023-11-21 19:05:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:05:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-21 19:05:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:05:46,718 INFO L225 Difference]: With dead ends: 300 [2023-11-21 19:05:46,719 INFO L226 Difference]: Without dead ends: 172 [2023-11-21 19:05:46,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:05:46,720 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 4 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:05:46,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:05:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-21 19:05:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-21 19:05:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 134 states have (on average 1.4104477611940298) internal successors, (189), 159 states have internal predecessors, (189), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:05:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 207 transitions. [2023-11-21 19:05:46,735 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 207 transitions. Word has length 32 [2023-11-21 19:05:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:05:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 207 transitions. [2023-11-21 19:05:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:05:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 207 transitions. [2023-11-21 19:05:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 19:05:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:05:46,738 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:05:46,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 19:05:46,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 19:05:46,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-21 19:05:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:05:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1858901023, now seen corresponding path program 3 times [2023-11-21 19:05:46,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:05:46,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364424798] [2023-11-21 19:05:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:05:46,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:05:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:05:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 19:05:47,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:05:47,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364424798] [2023-11-21 19:05:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364424798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:05:47,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189305892] [2023-11-21 19:05:47,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 19:05:47,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:05:47,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:05:47,278 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:05:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82315b5a-c2d5-4ebf-a83c-3f6c1a099ac1/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 19:05:47,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 19:05:47,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:05:47,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:05:47,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:05:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 19:05:47,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:05:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 19:05:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189305892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:05:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989396778] [2023-11-21 19:05:47,743 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-21 19:05:47,743 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:05:47,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:05:47,743 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:05:47,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs